fix: update temporary tag to latest-rc for growilabs image

.github/workflows/release-rc.yml

@@ -70,7 +70,7 @@ jobs:
       registry: docker.io
       image-name: 'growilabs/growi'
       docker-registry-username: 'growimoogle'
-      tag-temporary: latest
+      tag-temporary: latest-rc
     secrets:
       DOCKER_REGISTRY_PASSWORD: ${{ secrets.DOCKER_REGISTRY_PASSWORD_GROWIMOOGLE }}
 
@@ -83,6 +83,6 @@ jobs:
       registry: docker.io
       image-name: 'growilabs/growi'
       docker-registry-username: 'wsmoogle'
-      tag-temporary: latest
+      tag-temporary: latest-rc
     secrets:
       DOCKER_REGISTRY_PASSWORD: ${{ secrets.DOCKER_REGISTRY_PASSWORD }}