build(deps): bump codecov/codecov-action from 4 to 5 (#367)

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4 to 5.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v4...v5)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -23,7 +23,7 @@ jobs:
         run: npm ci
       - name: Run Vitest
         run: npm run test:unit
-      - uses: codecov/codecov-action@v4
+      - uses: codecov/codecov-action@v5
         with:
           # token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
           files: coverage/lcov.info