APIGateway: Cannot create Resource with colon in pathPart

[mascur]

Describe the bug

Cannot create Resource with a colon in the pathPart. This error is thrown: Error: Resource's path part only allow [a-zA-Z0-9._-], an optional trailing '+' and curly braces at the beginning and the end: events:batch.

Expected Behavior

I expect to successfully deploy this since this works in both the L1 construct and the console.

Current Behavior

This error is thrown during synth: Error: Resource's path part only allow [a-zA-Z0-9._-], an optional trailing '+' and curly braces at the beginning and the end: events:batch.

Reproduction Steps

backend = _lambda.Function(
    self, 'HelloHandler',
    runtime=_lambda.Runtime.PYTHON_3_7,
    code=_lambda.Code.from_asset('lambda'),
    handler='hello.handler',
)

api = apigw.LambdaRestApi(self, "TestAPI", handler=backend, proxy=False)
api.root.add_method("GET")
api_v1_resource = api.root.add_resource("v1")
events_batch_resource = api_v1_resource.add_resource("events:batch")

Possible Solution

Change this to allow colons:

aws-cdk/packages/@aws-cdk/aws-apigateway/lib/resource.ts

Line 555 in af1fb7c

if (!/^[a-zA-Z0-9\.\_\-]+$/.test(part)) {

Additional Information/Context

A workaround is

...
events_batch_resource = api_v1_resource.add_resource("events_batch")
events_batch_resource.node.default_child.path_part = "events:batch"

CDK CLI Version

2.45.0

Framework Version

No response

Node.js Version

16.16.0

OS

OSX

Language

Typescript, Python

Language Version

Python (3.10.4)

Other information

No response

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