ci(cleanup): Use different credentials for cleanup script (Azure#2338)

Author: kdestin

.github/workflows/cleanup-cli.yml

@@ -17,7 +17,7 @@ jobs:
     - name: azure login
       uses: azure/login@v1
       with:
-        creds: ${{secrets.AZ_CREDS}}
+        creds: ${{secrets.AZUREML_CREDENTIALS}}
     - name: install ml cli
       run: az extension add -n ml -y
     - name: setup workspace