Update eslint requirement from 5.15.2 to 5.15.3

Updates the requirements on [eslint](https://github.com/eslint/eslint) to permit the latest version.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v5.15.2...v5.15.3)

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -36,7 +36,7 @@
     "babel-loader": "8.0.5",
     "babel-plugin-add-module-exports": "1.0.0",
     "codacy-coverage": "3.4.0",
-    "eslint": "5.15.2",
+    "eslint": "5.15.3",
     "eslint-loader": "2.1.2",
     "eslint-plugin-babel": "5.3.0",
     "jest": "24.5.0",