feat(region-info): update Metadata regions (#31047)

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

@@ -20,6 +20,7 @@ export const AWS_CDK_METADATA = new Set([
   'ap-southeast-3',
   'ap-southeast-4',
   'ca-central-1',
+  'ca-west-1',
   'cn-north-1',
   'cn-northwest-1',
   'eu-central-1',