feat(cfnspec): cloudformation spec v46.0.0 (aws#17334)

Co-authored-by: AWS CDK Team <aws-cdk@amazon.com>
Co-authored-by: Eli Polonsky <epolon@amazon.com>
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

packages/monocdk/rosetta/basic-portfolio.ts-fixture

@@ -1,9 +1,9 @@
 // Fixture with packages imported, but nothing else
-import { Construct, Stack } from '@aws-cdk/core';
+import * as cdk from '@aws-cdk/core';
 import * as servicecatalog from '@aws-cdk/aws-servicecatalog';
 
-class Fixture extends Stack {
-  constructor(scope: Construct, id: string) {
+class Fixture extends cdk.Stack {
+  constructor(scope: cdk.Construct, id: string) {
     super(scope, id);
 
     const portfolio = new servicecatalog.Portfolio(this, "MyFirstPortfolio", {