Updating github actions to v4

Author: Fa-BRAIK

.github/workflows/php-tests.yml

@@ -43,7 +43,7 @@ jobs:
       run: composer run-script ci-test
 
     - name: Upload coverage report
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: coverage-report
         path: coverage.xml