Validate HTTP requests and responses against an OpenAPI v3.1 document

Changes for 0.062 - 2024-04-21T18:11:43Z

• BREAKING CHANGE: operation_path is dropped from the populated $options hash in validate_request, validate_response, and find_path, and replaced with path_item_uri
• "servers" entries are now allowed in openapi documents, but they are not yet considered when matching URIs to paths