Add option to hide private methods in PHP class diagram

In the PHP class diagram generation workflow, an option has been added to hide private methods. This change affects the visual representation of the code making it cleaner by reducing unnecessary information in the diagram.

.github/workflows/php-class-diagram.yml

@@ -24,6 +24,7 @@ jobs:
             output-path: ./images/php-class-diagram.svg
             target-repo: ${{ github.repository }}
             target-branch: ${{ github.ref_name }}
+            options: --hide-private-methods
 
         - name: Upload Artifact
           uses: actions/upload-artifact@v4