Add cloud-assembly-schema

Author: biffgaut

source/patterns/@aws-solutions-constructs/core/package.json

@@ -57,7 +57,8 @@
     "deep-diff": "^1.0.2",
     "deepmerge": "^4.0.0",
     "npmlog": "^7.0.0",
-    "constructs": "^10.0.0"
+    "constructs": "^10.0.0",
+    "@aws-cdk/cloud-assembly-schema": "48.9.0"
   },
   "devDependencies": {
     "@types/deep-diff": "^1.0.0",