Bump codecov/codecov-action from 3 to 5

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 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@v3...v5)

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

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

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -42,5 +42,5 @@ jobs:
         run: uv run inv pytest --junit --no-pty --isolated
 
       - name: Upload coverage reports to Codecov with GitHub Action on Python 3.13 for each OS
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v5
         if: ${{ matrix.python-version == '3.13' }}