Bump codecov/codecov-action from 3.1.4 to 3.1.5 (#142259)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3.1.4 to 3.1.5.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/codecov/codecov-action/releases">codecov/codecov-action's releases</a>.</em></p>
<blockquote>
<h2>v3.1.5</h2>
<h2>What's Changed</h2>
<ul>
<li>action.yml: Update to Node.js 20 by <a href="https://github.com/hallabro"><code>@​hallabro</code></a> in <a href="https://redirect.github.com/codecov/codecov-action/pull/1228">codecov/codecov-action#1228</a></li>
</ul>
<h2>New Contributors</h2>
<ul>
<li><a href="https://github.com/hallabro"><code>@​hallabro</code></a> made their first contribution in <a href="https://redirect.github.com/codecov/codecov-action/pull/1228">codecov/codecov-action#1228</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a href="https://github.com/codecov/codecov-action/compare/v3.1.4...v3.1.5">https://github.com/codecov/codecov-action/compare/v3.1.4...v3.1.5</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/codecov/codecov-action/commit/4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0"><code>4fe8c5f</code></a> chore(release): bump to 3.1.5</li>
<li><a href="https://github.com/codecov/codecov-action/commit/9140fdcf549f069e1ad6cc2bf17ee0251b024bfb"><code>9140fdc</code></a> action.yml: Update to Node.js 20 (<a href="https://redirect.github.com/codecov/codecov-action/issues/1228">#1228</a>)</li>
<li>See full diff in <a href="https://github.com/codecov/codecov-action/compare/eaaf4bedf32dbdc6b720b63067d99c4d77d6047d...4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0">compare view</a></li>
</ul>
</details>
<br />

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</details>

.github/workflows/coverage.yml

@@ -23,7 +23,7 @@ jobs:
       - name: ./bin/flutter test --coverage
         run: pushd packages/flutter;../../bin/flutter test --coverage -j 1;popd
       - name: upload coverage
-        uses: codecov/codecov-action@eaaf4bedf32dbdc6b720b63067d99c4d77d6047d
+        uses: codecov/codecov-action@4fe8c5f003fae66aa5ebb77cfd3e7bfbbda0b6b0
         with:
           files: packages/flutter/coverage/lcov.info
           verbose: true