update reference branch

Author: Mubangizi

.github/workflows/prod.yml

@@ -22,7 +22,7 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
         with:
-          ref: master # Reference branch
+          ref: deploy/gcp # Reference branch
 
       - name: Install (Buildx)
         uses: docker/setup-buildx-action@v3