Fix bluetooth audio dropout issue

[roxanneskelly]

Description

Use the latest update of the webrtc.lib which fixes an issue with some bluetooth devices dropping audio.

Related Issues

Fixes #5424

Found during #5118 evaluation

Testing Guidance:

• Use a windows 11 PC with a bluetooth headset or earbuds (airpods are good)
• Set the bluetooth device as your system default device for input and output
• Log in to a webrtc region (webrtc1.) If there is no load-test audio in that area, log in with a second viewer
• On the one with the bluetooth headset, click 'talk' and listen to the other av/load test. Expect, it reduces in bitrate and goes mono (it's a bluetooth thing)
• Unclick talk,. Expect, it goes back up to full bitrate and stereo (may take a second or more.)
• Validate that cycling through talk/mute a number of times does not prevent audio from being heard.
• If audio does go silent, and there are still voice 'bars' in the chat window, that's a fail. (try it with the release viewer vs this one)

Additional tests:

• Test basic webrtc usage with a surround sound setup (more than 2 channels output) or with a mixer or virtual mixer
• Test basic webrtc usage with a 4 channel + input microphone and/or a virtual mixer to get more than 4 channels of input