added missing dependency

Author: santoshyadavdev

package.json

@@ -36,6 +36,7 @@
   },
   "dependencies": {
     "@angular-devkit/architect": "^0.901.0",
+    "@angular-devkit/core": "^9.1.0",
     "schematics-utilities": "^2.0.1"
   }
 }