GH Actions: Bump codecov/codecov-action from 3 to 4

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 3 to 4.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](codecov/codecov-action@v3...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>

.github/workflows/php-qa.yml

@@ -76,7 +76,7 @@ jobs:
               run: ./vendor/bin/phpunit --coverage-clover=coverage.xml
 
             - name: Update codecov.io
-              uses: codecov/codecov-action@v3
+              uses: codecov/codecov-action@v4
               if: ${{ matrix.php-versions == '7.4' && matrix.dependency-versions == 'highest' }} # upload coverage once is enough
               with:
                 file: ./coverage.xml