fix: remove double URL-encoding in Deepgram STT plugin

[haroldfabla2-hue]

Fixes #1379

• Remove encodeURIComponent() wrapper around URLSearchParams.append() calls
• URLSearchParams.append() already handles URL encoding
• Fixes issue where parameters with special chars (spaces, quotes, etc.) were corrupted
• Example: keyterm=["Joe's Plumbing"] was being double-encoded to keyterm=Joe%2527s%2520Plumbing

[changeset-bot]

🦋 Changeset detected

Latest commit: 8552bd0

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 22 packages

Name	Type
@livekit/agents-plugin-deepgram	Patch
@livekit/agents	Patch
@livekit/agents-plugin-anam	Patch
@livekit/agents-plugin-baseten	Patch
@livekit/agents-plugin-bey	Patch
@livekit/agents-plugin-cartesia	Patch
@livekit/agents-plugin-elevenlabs	Patch
@livekit/agents-plugin-google	Patch
@livekit/agents-plugin-hedra	Patch
@livekit/agents-plugin-inworld	Patch
@livekit/agents-plugin-lemonslice	Patch
@livekit/agents-plugin-livekit	Patch
@livekit/agents-plugin-neuphonic	Patch
@livekit/agents-plugin-openai	Patch
@livekit/agents-plugin-phonic	Patch
@livekit/agents-plugin-resemble	Patch
@livekit/agents-plugin-rime	Patch
@livekit/agents-plugin-sarvam	Patch
@livekit/agents-plugin-silero	Patch
@livekit/agents-plugin-trugen	Patch
@livekit/agents-plugin-xai	Patch
@livekit/agents-plugins-test	Patch

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✅ toubatbrian
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[devin-ai-integration]

✅ Devin Review: No Issues Found

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