Update LiveKit dependencies (non-major) to v1.4.4

Author: renovate[bot]

requirements.txt

@@ -1,6 +1,6 @@
 livekit>=1.0.3
-livekit-agents==1.2.7
-livekit-plugins-openai==1.2.7
-livekit-plugins-deepgram==1.2.7
-livekit-plugins-silero==1.2.7
+livekit-agents==1.4.4
+livekit-plugins-openai==1.4.4
+livekit-plugins-deepgram==1.4.4
+livekit-plugins-silero==1.4.4
 python-dotenv~=1.0