Expedited update to address @types/prettier versioning issue.

Author: biffgaut

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

@@ -97,6 +97,7 @@
     "@types/deep-diff": "^1.0.0",
     "@types/npmlog": "^4.1.2",
     "@aws-cdk/assert": "0.0.0",
+    "@types/prettier": "2.6.0",
     "@types/jest": "^27.4.0",
     "@types/node": "^10.3.0"
   },
@@ -153,4 +154,4 @@
     "@aws-cdk/aws-ssm": "0.0.0",
     "@aws-cdk/aws-wafv2": "0.0.0"
   }
-}
+}