feat(region-info): update Metadata regions (#31046)

Update the list of regions where the CDK deploys the `AWS::CDK::Metadata` resource.

Author: aws-cdk-automation

packages/aws-cdk-lib/region-info/build-tools/metadata.ts

@@ -14,14 +14,19 @@ export const AWS_CDK_METADATA = new Set([
   'ap-northeast-2',
   'ap-northeast-3',
   'ap-south-1',
+  'ap-south-2',
   'ap-southeast-1',
   'ap-southeast-2',
+  'ap-southeast-3',
+  'ap-southeast-4',
   'ca-central-1',
   'cn-north-1',
   'cn-northwest-1',
   'eu-central-1',
+  'eu-central-2',
   'eu-north-1',
   'eu-south-1',
+  'eu-south-2',
   'eu-west-1',
   'eu-west-2',
   'eu-west-3',