build(deps): 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] <[email protected]>

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
 
     - name: Run coverage
       if: matrix.python-version == '3.11' && matrix.toxenv == 'django42'
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         flags: unittests
         fail_ci_if_error: true