Generation of client aborts using OpenAPI 3.1.0 document

[waterfallwhitebread]

Describe the bug
I am having an OpenAPI document generated from FastAPI backend. The OpenAPI version is 3.1.0. Generation of client is aborting with:

Error(s) encountered while generating, client was not created

Failed to parse OpenAPI document
    For further information visit https://errors.pydantic.dev/2.3/v/literal_error
openapi.`literal['3.0.2']`
  Input should be '3.0.2' [type=literal_error, input_value='3.1.0', input_type=str]
    For further information visit https://errors.pydantic.dev/2.3/v/literal_error
openapi.`literal['3.0.3']`
  Input should be '3.0.3' [type=literal_error, input_value='3.1.0', input_type=str]
    For further information visit https://errors.pydantic.dev/2.3/v/literal_error

OpenAPI Spec File
Any OpenAPI spec starting with {"openapi":"3.1.0"

Desktop (please complete the following information):

• OS: Windows 10
• Python Version : 3.11.2
• openapi-python-client version, 0.15.2

Additional context

[dbanty]

Follow #818 and #856 for updates on 3.1.0 support.