Unable to parse integers found in enums in unqork open api spec

[upgradingdave]

Describe the Bug

When trying to parse Unqork's open api spec, the following error is thrown:

Generation failed: class java.lang.Integer cannot be cast to class java.lang.String (java.lang.Integer and java.lang.String are in module java.base of loader 'bootstrap')

Steps to Reproduce

1. Run this:

congen -e ServiceTask -e IntermediateThrowEvent generate openapi-outbound https://developers.unqork.io/api/1.0/openapi.yml

2. An exception is thrown because the choice variables refrenced on this line here are expected to be Strings. However, in Unqork open api spec, line 5709 has a definition like this:

    SubmissionSortOrder:
      name: sortOrder
      in: query
      description: Order of sort, if `sortBy` is specified.  One of [`1` (ascending),`-1` (descending)]
      required: false
      schema:
        type: integer
        enum:
          - 1
          - -1
        default: 1

The 1 and -1 are Integers and that's what causes the type cast exception

Expected Behavior

No error should be thrown and a valid json element template to be output.

Environment

• OS: MacOS Monterey (12.6.3)
• Library version: 8.5.0-SNAPSHOT
• Camunda version: N/A