chore(main): release 1.69.0

[release-please]

🤖 I have created a release beep boop

1.69.0 (2026-03-27)

Features

• Add consent_audio and voice_consent_signature and AsyncSession.setup_complete (69a02c4)
• Add custom_metadata to FileSearchResult. (aed1559)
• Add labels field to Veo configs (208a173)
• Add mime type for Audio content (674b837)
• Add model_status to GenerateContentResponse (Gemini API only) (ce86f2b)
• Add part_metadata in Part (Gemini API only) (ce86f2b)
• Add service tier for interactions. (b07002e)
• Add service tier to GenerateContent. (12b404b)
• Add support for more image and audio MIME types in Interactions content (8ec977c)
• Add supported models to the ModelOptions (1ccad7b)
• Autoenable mTLS in environment with bound token (Agent Engine with AgentAuthority) through google-auth migration (except custom client args, custom client or custom ClientSession) (a95d08a)
• genai: Add TURN_INCLUDES_AUDIO_ACTIVITY_AND_ALL_VIDEO to TurnCoverage (1ba8e2e)
• Support hyperparameters in distillation tuning (ad38e3a)
• Support rendered_parts in GroundingSupport (ce86f2b)

Bug Fixes

• Support us region routing (8e3e00c)

Documentation

• Update python docs for 1.68. (07ae1b1)

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[release-please]

🤖 Created releases:

• v1.69.0

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