quotes for safety

Author: johnzhou721

.github/workflows/ci.yaml

@@ -109,7 +109,7 @@ jobs:
 
             - target: MacCatalyst
               run-testbed: true
-              testbed-run-preargs: --catalyst
+              testbed-run-preargs: ' --catalyst'
 
     steps:
     - uses: actions/[email protected]