Update GitHub Actions workflow to trigger GitLab pipeline with specific remote ref variable for enhanced flexibility

Author: namtzigla

.github/workflows/buf-push.yaml

@@ -20,5 +20,5 @@ jobs:
           breaking: ${{ github.event_name == 'push' }}
       - uses: enflo/curl-action@master
         with:
-            curl: -X POST --fail -F token=${{ secrets.GITLAB_TRIGGER_TOKEN }} -F ref=${{ github.ref }} https://git.tcncloud.net/api/v4/projects/2193/trigger/pipeline
+            curl: -X POST --fail -F token=${{ secrets.GITLAB_TRIGGER_TOKEN }} -F ref=master -F "variables[REMOTE_REF]=${{ github.ref }}" https://git.tcncloud.net/api/v4/projects/2193/trigger/pipeline