[python-pydantic-v1] Fix bug in serialization for SecretStr by applying changes from #18023#20102

wing328 merged 3 commits intoOpenAPITools:masterOpenAPITools/openapi-generator:masterfrom

webertim:feature/CBR-python-pydantic-v1-secret-strwebertim/openapi-generator:feature/CBR-python-pydantic-v1-secret-strCopy head branch name to clipboard