OpenAI Agents Python v0.17.8 adds invalid output recovery and strict validation fixes

OpenAI released version 0.17.8 of the openai-agents-python library, introducing new features for handling agent outputs and several bug fixes.

• Added an invalid final output recovery handler to manage failed agent executions.
• Enforced strict Pydantic validation when using strict_json_schema=True with handoffs.
• Fixed propagation of realtime session iterator cancellation.
• Redacted validation failure logs in the realtime module for improved security.
• Preserved non-dict Mapping values in _to_dump_compatible and escaped quotes in DOT names.

This release improves reliability in sandboxed environments and ensures stricter data validation for agent handoffs.