improve condition in handle error step

Author: yunchengyang515

.github/workflows/setup-stackql.yml

@@ -58,8 +58,8 @@ jobs:
       run: | 
         stackql exec -i ./examples/google-example.iql --auth='{ "google": { "type": "service_account",  "credentialsfilepath": "sa-key.json" }}'
 
-    ### uncomment the step to see error handling
     - name: Handle error
+      if: ${{ matrix.use_wrapper}}
       continue-on-error: true
       run: | ## use the secret to create json file
         stackql exec -i ./examples/github-example.iql --auth="${INVALID_AUTH}"