fixed stack verify (#794)

Co-authored-by: Dustin Hickey <hickeydh@amazon.amazon.com>

Author: hickeydh-aws

src/core/cdk/src/tasks/cdk-bootstrap.ts

@@ -144,7 +144,7 @@ export class CDKBootstrapTask extends sfn.StateMachineFragment {
     const createBootstrapInRegion = new sfn.Map(this, `Bootstrap Account Region Map`, {
       itemsPath: `$.regions`,
       resultPath: 'DISCARD',
-      maxConcurrency: 16,
+      maxConcurrency: 17,
       parameters: {
         'accountId.$': '$.accountId',
         'region.$': '$$.Map.Item.Value',

src/core/runtime/src/create-stack/verify.ts

@@ -25,7 +25,7 @@ export const handler = async (input: Partial<CheckStepInput>) => {
   let cfn: CloudFormation;
   if (accountId && assumeRoleName) {
     const credentials = await sts.getCredentialsForAccountAndRole(accountId, assumeRoleName);
-    cfn = new CloudFormation(credentials);
+    cfn = new CloudFormation(credentials, region);
   } else {
     cfn = new CloudFormation();
   }