python-1.43.1

What's Changed

• Python: Add function_choice_behavior support to Azure AI and OpenAI Assistant agents by SergeyMenshykh in #14057
• Fix MessagePack by SergeyMenshykh in #14079
• .Net: fix: prevent duplicate "null" in JSON Schema type arrays for nullable parameters by Roli Bosch (@roli-lpci) in #13635
• Python: Reject encoded dot-segment paths in OpenAPI plugin (.NET and Python) by Roger Barreto (@rogerbarreto) in #14086
• Python: Bump Python version to 1.43.1 for a release. by Evan Mattson (@moonbox3) in #14093

Full Changelog: python-1.43.0...python-1.43.1