Improve Websocket Broadcasting Stability

[Mark90]

• Make RedisBroadcast retry in case of connection errors/timeouts
• Fix RedisBroadcast not releasing redis connection
• Extend logging in BroadcastWebsocketManager and catch exceptions
• Fixed some tests, updated pre-commit
• Bump version to 2.7.4

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.36585% with 6 lines in your changes missing coverage. Please review.

Project coverage is 83.43%. Comparing base (b9f0920) to head (17bade7). Report is 5 commits behind head on main.

Files	Patch %	Lines
.../websocket/managers/broadcast_websocket_manager.py	76.00%	5 Missing and 1 partial :warning:

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #735      +/-   ##
==========================================
- Coverage   83.44%   83.43%   -0.01%     
==========================================
  Files         188      188              
  Lines        9266     9287      +21     
  Branches     1520     1523       +3     
==========================================
+ Hits         7732     7749      +17     
- Misses       1271     1274       +3     
- Partials      263      264       +1     

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