add missing push field on action

Author: enchant97

.github/workflows/publish.yml

@@ -50,6 +50,7 @@ jobs:
         with:
           context: ./${{ matrix.service_name }}
           platforms: ${{ matrix.build_arch }}
+          push: ${{ github.event_name != 'pull_request' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=gha