chore(deps): bump websockets from 12.0 to 16.0

Bumps [websockets](https://github.com/python-websockets/websockets) from 12.0 to 16.0.
- [Release notes](https://github.com/python-websockets/websockets/releases)
- [Commits](python-websockets/websockets@12.0...16.0)

---
updated-dependencies:
- dependency-name: websockets
  dependency-version: '16.0'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -13,7 +13,7 @@ sounddevice==0.4.6  # Microphone input for STT
 fastapi==0.128.0
 uvicorn[standard]==0.27.0
 python-multipart==0.0.6
-websockets==12.0
+websockets==16.0
 
 # Telephony
 twilio==8.11.1