fix: Grant correct secret retrieval perm to integ tests

Author: clareliguori

e2e_tests/setup/integ-test-authentication.yaml

@@ -105,7 +105,7 @@ Resources:
             Action:
               - "secretsmanager:GetSecretValue"
             Resource:
-              - !Sub "arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:mcp-lambda-examples-user-creds-*"
+              - !Sub "arn:aws:secretsmanager:${AWS::Region}:${AWS::AccountId}:secret:mcp-lambda-examples-oauth-client-secret-*"
       Roles:
         - !Ref IntegrationTestRole