Update eslint-plugin-react to the latest version 🚀 (#118)

## The devDependency [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) was updated from `7.12.3` to `7.12.4`.
This version is **not covered** by your **current version range**.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

---

<details>
<summary>Release Notes for v7.12.4</summary>

<h3>Fixed</h3>
<ul>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/no-unused-prop-types.md"><code>no-unused-prop-types</code></a>: avoid a crash (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2131" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2131/hovercard">#2131</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=45469" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/ljharb">@ljharb</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/prop-types.md"><code>prop-types</code></a>: avoid further crashes from nonexistent nodes in unusedPropTypes (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2127" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2127/hovercard">#2127</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=45469" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/ljharb">@ljharb</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/prop-types.md"><code>prop-types</code></a>: Read name of callee object (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/pull/2125" data-hovercard-type="pull_request" data-hovercard-url="/jsx-eslint/eslint-plugin-react/pull/2125/hovercard">#2125</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=817020" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/CrOrc">@CrOrc</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/prop-types.md"><code>prop-types</code></a>: Ignore reassignments when matching props declarations with components (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2051" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2051/hovercard">#2051</a>, <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/1957" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/1957/hovercard">#1957</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=13209" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/yannickcr">@yannickcr</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/prop-types.md"><code>prop-types</code></a>, <a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/no-unused-prop-types.md"><code>no-unused-prop-types</code></a>, <a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/require-default-props.md"><code>require-default-props</code></a>: Detect components with return statement in switch/case (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2118" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2118/hovercard">#2118</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=13209" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/yannickcr">@yannickcr</a>)</li>
</ul>
<h3>Changed</h3>
<ul>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/prop-types.md"><code>prop-types</code></a>, <a href="/yannickcr/eslint-plugin-react/blob/v7.12.4/docs/rules/no-typos.md"><code>no-typos</code></a>: add passing test cases (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2123" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2123/hovercard">#2123</a>, <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2128" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2128/hovercard">#2128</a>, <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2136" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2136/hovercard">#2136</a>, <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2134" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2134/hovercard">#2134</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=45469" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/ljharb">@ljharb</a>)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 10 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/433cc3f6fea3a202426cf8ea568aa4bf3fe7a415"><code>433cc3f</code></a> <code>Update CHANGELOG and bump version</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/536bc35643eacfacbeb2391c8ee49903b97954dc"><code>536bc35</code></a> <code>[Tests] <code>prop-types</code>: add case from #2134</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/df7ffc1b43964e5589f4c24eb8eaf03e1cb9a437"><code>df7ffc1</code></a> <code>[Tests] <code>no-typos</code>: test case from #2136</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/c7e5f384821d273f27c71030951fb6f02da5cfc6"><code>c7e5f38</code></a> <code>[Tests] improve version detection tests.</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/2dd2277cc4166e368a1dd172cfcebedcf930c212"><code>2dd2277</code></a> <code>[Tests] <code>prop-types</code>: add now-passing test case</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/84652b6527161f651a671754fb5f619296c3654e"><code>84652b6</code></a> <code>[Fix] <code>no-unused-prop-types</code>: avoid a crash</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/58ed9e9716f74dbf758766a5ac22425be411181f"><code>58ed9e9</code></a> <code>[Fix] <code>prop-types</code>: avoid further crashes from nonexistent nodes in unusedPropTypes</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/7f7b96d155dcb43baa3f438aa7c4720f0aa94298"><code>7f7b96d</code></a> <code>[Fix] <code>prop-types</code>: Read name of callee object.</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/5fc50aa9238768674cf2a2ca1d9676be629a920a"><code>5fc50aa</code></a> <code>[Fix] Ignore reassignments when matching props declarations with components</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/ba80a4c01b1086f6fd1202ebc9c262fc5f05b65b"><code>ba80a4c</code></a> <code>[Fix] Detect components with return statement in switch/case</code></li>
</ul>
<p>See the <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/compare/2f5cec96eca70cfe579038c8b9a81ba5a6a88594...433cc3f6fea3a202426cf8ea568aa4bf3fe7a415">full diff</a></p>
</details>

<details>
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package.json

@@ -42,7 +42,7 @@
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jsx-a11y": "^6.1.1",
     "eslint-plugin-prefer-object-spread": "^1.2.1",
-    "eslint-plugin-react": "7.12.3",
+    "eslint-plugin-react": "7.12.4",
     "jest": "^23.5.0",
     "jest-cli": "^23.5.0",
     "jsdoc": "^3.4.3",