Bump codecov/codecov-action from 5.0.2 to 5.0.4 in /.github/workflows

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 5.0.2 to 5.0.4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v5.0.2...v5.0.4)

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

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

.github/workflows/tests.yml

@@ -77,7 +77,7 @@ jobs:
           hatch run coverage xml
       - name: Upload coverage to Codecov
         if: ${{ matrix.coverage }}
-        uses: codecov/[email protected].2
+        uses: codecov/[email protected].4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage.xml