[BUG] $ in path results in wrong string for chopper generation

[matecode]

I have an API where I have several endpoints containing a .../$batch, which result in the following error:

Describe the bug
If the path contains a $, this is not escaped when *.swagger.dart is generated, resulting in an incorrect string.

To Reproduce

openapi: 3.0.0
info:
  version: 1.0.0
  title: Sample API
  description: A sample API to illustrate OpenAPI concepts
paths:
  /list/$batch:
    post:
      description: Returns a list of stuff
      responses:
        '200':
          description: Successful response

is genertated to (just a part of *.swagger.dart)

@ChopperApi()
abstract class TestApi extends ChopperService {
  ...
  ///
  @Get(path: '/list/$batch')
  Future<chopper.Response> _list$BatchGet();
}

Expected behavior
The String in the path in the ChopperService should be escaped:
@Get(path: '/list/\$batch')

Library version used:
swagger_dart_code_generator: 3.0.1

Thank you for your help