Bump codecov/codecov-action from 4 to 5 in the actions group

Bumps the actions group with 1 update: [codecov/codecov-action](https://github.com/codecov/codecov-action).


Updates `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
  dependency-group: actions
...

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

Author: dependabot[bot]

.github/workflows/tests.yml

@@ -44,7 +44,7 @@ jobs:
       # this is why we run `coverage xml` afterwards (required by codecov)
     - name: Upload to Codecov
       if: github.repository == 'executablebooks/jupyter-cache' && matrix.python-version == '3.10' && matrix.os == 'ubuntu-latest' && false
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         name: jupyter-cache-pytests-py3.10
         flags: pytests