fix(route53): Added support for eusc-de partition

Author: moriano

packages/@aws-cdk/custom-resource-handlers/lib/aws-route53/cross-account-zone-delegation-handler/index.ts

@@ -119,6 +119,7 @@ function route53Region(region: string) {
     'us-isob': 'us-isob-east-1',
     'eu-isoe': 'eu-isoe-west-1',
     'us-isof': 'us-isof-south-1',
+    'eusc-de': 'eusc-de-east-1'
   };
 
   for (const [prefix, mainRegion] of Object.entries(partitions)) {