chore(deps): update codecov/codecov-action action to v3.1.6 (#45)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [codecov/codecov-action](https://togithub.com/codecov/codecov-action)
| action | patch | `v3.1.4` -> `v3.1.6` |

---

### Release Notes

<details>
<summary>codecov/codecov-action (codecov/codecov-action)</summary>

###
[`v3.1.6`](https://togithub.com/codecov/codecov-action/releases/tag/v3.1.6)

[Compare
Source](https://togithub.com/codecov/codecov-action/compare/v3.1.5...v3.1.6)

**Full Changelog**:
codecov/codecov-action@v3.1.5...v3.1.6

###
[`v3.1.5`](https://togithub.com/codecov/codecov-action/releases/tag/v3.1.5)

[Compare
Source](https://togithub.com/codecov/codecov-action/compare/v3.1.4...v3.1.5)

#### What's Changed

- action.yml: Update to Node.js 20 by
[@&#8203;hallabro](https://togithub.com/hallabro) in
[https://github.com/codecov/codecov-action/pull/1228](https://togithub.com/codecov/codecov-action/pull/1228)

#### New Contributors

- [@&#8203;hallabro](https://togithub.com/hallabro) made their first
contribution in
[https://github.com/codecov/codecov-action/pull/1228](https://togithub.com/codecov/codecov-action/pull/1228)

**Full Changelog**:
codecov/codecov-action@v3.1.4...v3.1.5

</details>

---

### Configuration

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Automerge - At any time (no schedule defined).

🚦 **Automerge**: Disabled by config. Please merge this manually once you
are satisfied.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

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.github/workflows/test.yml

@@ -72,6 +72,6 @@ jobs:
 
       - name: Upload coverage to Codecov
         if: matrix.toolchain == 'stable'
-        uses: codecov/[email protected].4
+        uses: codecov/[email protected].6
         with:
           files: codecov.json