Bump codecov/codecov-action from 2 to 4 (#451)

* Bump codecov/codecov-action from 2 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 2 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v2...v4)

---
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>

* Add token parameter to codecov action

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Artem Gavrilov <artem.gavrilov@percona.com>

.github/workflows/code-coverage-test.yml

@@ -104,9 +104,10 @@ jobs:
         working-directory: src/pg_stat_monitor
 
       - name: Upload
-        uses: codecov/codecov-action@v2
+        uses: codecov/codecov-action@v4
         with:
           verbose: true
+          token: ${{ secrets.CODECOV_TOKEN }}
           working-directory: ./src/pg_stat_monitor
           files: ./pg_stat_monitor.c.gcov,./hash_query.c.gcov,./guc.c.gcov