fix IAM policy

Author: devksingh4

cloudformation/iam.yml

@@ -87,6 +87,7 @@ Resources:
               - Fn::Sub: arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/infra-core-api-room-requests-status/index/*
               - Fn::Sub: arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/infra-core-api-linkry/index/*
               - Fn::Sub: arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/infra-core-api-membership-provisioning/index/*
+              - Fn::Sub: arn:aws:dynamodb:${AWS::Region}:${AWS::AccountId}:table/infra-core-api-membership-external-v3/index/*
 
           - Sid: DynamoDBCacheAccess
             Effect: Allow