livekit-agents@1.5.3

> [!NOTE]  
> **livekit-agents 1.5 introduced many new features. You can check out the changelog [here](https://github.com/livekit/agents/releases/tag/livekit-agents%401.5.0).**

## What's Changed
* feat(amd): add OTEL span and tag for AMD by @chenghao-mou in https://github.com/livekit/agents/pull/5376
* fix(openai): prepend session instructions in realtime generate_reply by @longcw in https://github.com/livekit/agents/pull/5394
* fix: AgentTask deadlock when on_enter awaits generate_reply that triggers another AgentTask by @longcw in https://github.com/livekit/agents/pull/5377
* telemetry: emit OTel span events for developer-role messages by @joaquinhuigomez in https://github.com/livekit/agents/pull/5403
* feat(realtime): reuse realtime session across agent handoffs if supported by @longcw in https://github.com/livekit/agents/pull/5229
* fix(llm): handle double-encoded JSON tool arguments from providers by @prettyprettyprettygood in https://github.com/livekit/agents/pull/5409
* chore: exposed the max session duration in with_azure() function by @k-1208 in https://github.com/livekit/agents/pull/5383
* (gemini live 3.1): fix tool responses by @tinalenguyen in https://github.com/livekit/agents/pull/5413
* fix(google): capture usage_metadata before early continues in streaming by @Panmax in https://github.com/livekit/agents/pull/5404
* fix(voice): block new user turns immediately on update_agent() to prevent transition delay by @Panmax in https://github.com/livekit/agents/pull/5396
* fix(tests): update drive thru instructions by @chenghao-mou in https://github.com/livekit/agents/pull/5405
* feat(inference): handle preflight_transcript in inference STT plugin by @adrian-cowham in https://github.com/livekit/agents/pull/5412
* fix(aws): unwrap doubly-encoded JSON tool arguments from Nova Sonic by @rililinx in https://github.com/livekit/agents/pull/5411
* chore: pin GHA by commit by @davidzhao in https://github.com/livekit/agents/pull/5415
* chore(deps): update dependency langchain-core to v1.2.28 [security] by @renovate[bot] in https://github.com/livekit/agents/pull/5417
* chore(deps): update dependency aiohttp to v3.13.4 [security] by @renovate[bot] in https://github.com/livekit/agents/pull/5416
* chore(deps): update dependency nltk to v3.9.4 [security] by @renovate[bot] in https://github.com/livekit/agents/pull/5418
* (azure openai): ensure gpt-realtime-1.5 compatibility by @tinalenguyen in https://github.com/livekit/agents/pull/5407
* chore(deps): update github workflows (major) by @renovate[bot] in https://github.com/livekit/agents/pull/5424
* update: Sarvam STT - add verbose error loggin and remove retry connection by @dhruvladia-sarvam in https://github.com/livekit/agents/pull/5373
* fix(inworld): do not leak connections when when cancelled by @davidzhao in https://github.com/livekit/agents/pull/5427
* feat: add service_tier parameter to Responses API LLM by @piyush-gambhir in https://github.com/livekit/agents/pull/5346
* Feature/krisp viva sdk support by @realgarik in https://github.com/livekit/agents/pull/4370
* fix: empty transcript blocks commit_user_turn until timeout by @longcw in https://github.com/livekit/agents/pull/5429
* fix: allow multiple AsyncToolsets by deduplicating management tools by @longcw in https://github.com/livekit/agents/pull/5369
* feat(beta/workflows): add InstructionParts for modular instruction customization by @longcw in https://github.com/livekit/agents/pull/5077
* add ToolSearchToolset and ToolProxyToolset for dynamic tool discovery by @longcw in https://github.com/livekit/agents/pull/5140
* Feature - Configurable session close transcript timeout by @bml1g12 in https://github.com/livekit/agents/pull/5328
* Fix FrameProcessor lifecycle for selector based noise cancellation by @Topherhindman in https://github.com/livekit/agents/pull/5433
* feat: add Runway Characters avatar plugin by @robinandeer in https://github.com/livekit/agents/pull/5355
* Rename e2ee to encryption in JobContext.connect by @longcw in https://github.com/livekit/agents/pull/5454
* chore: reduce renovate noise by @davidzhao in https://github.com/livekit/agents/pull/5421
* fix(liveavatar): wait for connected state and chunk audio before sending by @dyi1 in https://github.com/livekit/agents/pull/5453
* (phonic): support realtimemodel say() by @tinalenguyen in https://github.com/livekit/agents/pull/5293
* feat: add Cerebras LLM plugin by @u9g in https://github.com/livekit/agents/pull/5456
* (google tts): add "gemini-3.1-flash-tts-preview" model by @tinalenguyen in https://github.com/livekit/agents/pull/5459
* (hedra) remove from examples and raise exception by @tinalenguyen in https://github.com/livekit/agents/pull/5460
* xai stt by @tinalenguyen in https://github.com/livekit/agents/pull/5458
* feat(openai): expose max_output_tokens on Responses API LLM by @piyush-gambhir in https://github.com/livekit/agents/pull/5449
* (xai stt): pass diarization capability + minor fix by @tinalenguyen in https://github.com/livekit/agents/pull/5461
* Adding xAI Grok llm support for inference by @russellmartin-livekit in https://github.com/livekit/agents/pull/5201
* (release workflow): allow spacing in dependency by @tinalenguyen in https://github.com/livekit/agents/pull/5463
* livekit-agents@1.5.3 by @github-actions[bot] in https://github.com/livekit/agents/pull/5464

## New Contributors
* @joaquinhuigomez made their first contribution in https://github.com/livekit/agents/pull/5403
* @k-1208 made their first contribution in https://github.com/livekit/agents/pull/5383
* @rililinx made their first contribution in https://github.com/livekit/agents/pull/5411
* @renovate[bot] made their first contribution in https://github.com/livekit/agents/pull/5417
* @realgarik made their first contribution in https://github.com/livekit/agents/pull/4370
* @robinandeer made their first contribution in https://github.com/livekit/agents/pull/5355
* @dyi1 made their first contribution in https://github.com/livekit/agents/pull/5453
* @u9g made their first contribution in https://github.com/livekit/agents/pull/5456

**Full Changelog**: https://github.com/livekit/agents/compare/livekit-agents@1.5.2...livekit-agents@1.5.3