[Feature]: Support for OpenAPI Spec 3.2

[caochenlei]

Feature Description

Add support for parsing and validating OpenAPI Specification 3.2.0. This update addresses the gap in current prance capabilities where only older OpenAPI versions are supported, preventing users from leveraging the latest specification features and improvements.

Suggested Solution

1. Schema Updates: Update the internal schema definitions to support OpenAPI 3.2.0 structure and validation rules
2. Version Detection: Enhance version parsing to recognize 3.2.0 in the openapi field
3. Backward Compatibility: Maintain support for existing OpenAPI versions while adding 3.2.0 capabilities
4. New Feature Support: Implement support for 3.2.0 specific features such as:
   • Updated JSON Schema dialect (2020-12)
   • New webhook object support
   • Enhanced security scheme features

Additional Context

• OpenAPI 3.2.0 Release Notes: https://github.com/OAI/OpenAPI-Specification/releases/tag/3.2.0
• OpenAPI 3.2.0 Specification: https://spec.openapis.org/oas/v3.2.0
• Migration Guide: The 3.2.0 release is designed to be compatible with 3.1.0 with minimal breaking changes
• Industry Adoption: Growing number of API tools and platforms are adding 3.2.0 support