fix: integration test cors_with_apikey_and_cors (#3021)

Author: Connor Robertson

integration/resources/templates/combination/api_with_cors_and_apikey.yaml

@@ -62,7 +62,7 @@ Resources:
                 credentials:
                   Fn::Sub: ${ApiGatewayLambdaRole.Arn}
                 uri:
-                  Fn::Sub: arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyFunction.Arn}/invocations
+                  Fn::Sub: arn:${AWS::Partition}:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyFunction.Arn}/invocations
                 passthroughBehavior: when_no_match
                 httpMethod: POST
                 type: aws_proxy
@@ -72,7 +72,7 @@ Resources:
                 credentials:
                   Fn::Sub: ${ApiGatewayLambdaRole.Arn}
                 uri:
-                  Fn::Sub: arn:aws:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyFunction.Arn}/invocations
+                  Fn::Sub: arn:${AWS::Partition}:apigateway:${AWS::Region}:lambda:path/2015-03-31/functions/${MyFunction.Arn}/invocations
                 passthroughBehavior: when_no_match
                 httpMethod: POST
                 type: aws_proxy