[BUG] Overflow in maximum value validator (python and others)

[dylex]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator (example)?
• Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

With a schema like this:

"item": {
  "maximum": 18446744073709551615,
  "type": "integer",
  "minimum": 0
}

The python generator produces a validator like this:

      validations = {
          ('value',): {
              'inclusive_maximum': -1,
              'inclusive_minimum': 0,
          },
      }

It seems like that maximum value is overflowing. (These ranges are automatically generated by my openapi library for uint64_t types.) This also affects a number of other generators I've tried.

openapi-generator version

>docker run --rm openapitools/openapi-generator-cli version
6.0.1-SNAPSHOT

OpenAPI declaration file content or url

{"openapi":"3.0.0","info":{"version":"2.0","title":"Test API"},"servers":[{"url":"http://localhost:8092/api"}],"paths":{"/":{"get":{"operationId":"top","responses":{"200":{"$ref":"#/components/responses/top"}}}}},"components":{"schemas":{"item":{"maximum":18446744073709551615,"type":"integer","minimum":0}},"responses":{"top":{"description":"top result","content":{"application/json":{"schema":{"items":{"$ref":"#/components/schemas/item"}}}}}}}}

Generation Details

docker run -v $PWD:/data --rm openapitools/openapi-generator-cli generate -i /data/openapi.json -g python -o /data/python