chore: disable multi-az integration tests temporarily

Author: karenc-bq

.github/workflows/integration_tests.yml

@@ -29,7 +29,7 @@ jobs:
       fail-fast: false
       matrix:
         versions: [ "default", "latest" ]
-        dbEngine: ["aurora-mysql", "aurora-postgres", "multi-az-mysql", "multi-az-postgres" ]
+        dbEngine: ["aurora-mysql", "aurora-postgres" ]
 
     steps:
       - name: Clone repository