[RTC-566] Update fake_turn to 0.4.3

[mickel8]

Update fake_turn to solve the problem with 401 Unauthorized

Acknowledging the stipulations set forth:

• I hereby confirm that a Pull Request involving updates to the Software Development Kit (SDK) has been smoothly merged, currently awaits processing, or is otherwise deemed unnecessary in this context.
• I also affirm that another Pull Request, specifically addressing updates to the documentation body (commonly referred to as 'docs'), has either been successfully incorporated, is in the process of review, or is considered superfluous under the prevailing circumstances.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.28%. Comparing base (09dd6a1) to head (9fee3d5).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #214   +/-   ##
=======================================
  Coverage   85.28%   85.28%           
=======================================
  Files          83       83           
  Lines        1638     1638           
=======================================
  Hits         1397     1397           
  Misses        241      241           

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