Bump codecov/codecov-action from 4 to 5 (#1607)

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]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci-build.yml

@@ -53,7 +53,7 @@ jobs:
         python setup.py unit_tests --test-target tests/slack_sdk/oauth/state_store/test_sqlalchemy.py
     - name: Run codecov (only 3.9)
       if: startsWith(matrix.python-version, '3.9')
-      uses: codecov/codecov-action@v4
+      uses: codecov/codecov-action@v5
       with:
         token: ${{ secrets.CODECOV_TOKEN }}
         # python setup.py validate generates the coverage file