fix: bump @aws-cdk/cloud-assembly-schema to 53.8.0

Author: Hweinstock

package-lock.json

@@ -70,6 +70,7 @@
     "test:tui": "npm run build:harness && vitest run --project tui"
   },
   "dependencies": {
+    "@aws-cdk/cloud-assembly-schema": "^53.8.0",
     "@aws-cdk/toolkit-lib": "^1.16.0",
     "@aws-sdk/client-application-signals": "^3.1003.0",
     "@aws-sdk/client-bedrock": "^3.1012.0",