fix: perms for CloudFormation to deploy AgentCore gateways #1599

Job	Run time
python / Check Python chatbot	14s
typescript / Check Typescript E2E tests	33s
python / Check Python library	47s
cdk / Check Typescript-based Dictionary Server	1m 37s
typescript / Check Typescript library	43s
cdk / Check Python-based Time Server	1m 54s
python / Check Python E2E tests	10s
typescript / Check Typescript chatbot	48s
cdk / Check Python-based Dad Jokes Server	1m 57s
cdk / Check Typescript-based Dog Facts Server	1m 43s
cdk / Check Python-based MCP Doc Server	1m 53s
cdk / Check Python-based Zen Server	55s
cdk / Check Typescript-based Cat Facts Server	1m 39s
cdk / Check Typescript-based Cognito stack	25s
cdk / Check Typescript-based Weather Alerts Server	1m 38s
cdk / Check Python-based Book Search Server	2m 6s
	19m 2s

Provide feedback