Setting version to v0 as main is not yet available

Signed-off-by: Gustavo Carvalho <gustavo.carvalho@container-solutions.com>

.github/workflows/e2e-managed.yml

@@ -164,7 +164,7 @@ jobs:
 
     - name: Setup gcloud CLI
       if: github.event.client_payload.slash_command.args.named.provider == 'gcp'
-      uses: google-github-actions/setup-gcloud@main
+      uses: google-github-actions/setup-gcloud@v0
       with:
         service_account_key: ${{ env.GCP_SM_SA_GKE_JSON }}
         project_id: ${{ env.GCP_PROJECT_ID }}