Bump codecov/codecov-action from 4 to 5

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-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/ci.yml

@@ -128,7 +128,7 @@ jobs:
     - name: "🧪 Test Python code"
       run: pytest --cov --cov-report=xml .
     - name: "📤 Upload coverage to Codecov"
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       if: matrix.python == '3.11'
       with:
         token: ${{ secrets.CODECOV_TOKEN }}