refactor: use 'with' statement for socket handling

[skbeh]

Use a 'with' statement to handle socket creation and cleanup.

This ensures that sockets are always closed properly, even when exceptions occur, preventing potential resource leaks.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 65 lines in your changes missing coverage. Please review.
✅ Project coverage is 82.27%. Comparing base (c5cc0f2) to head (ce02ea2).

Files with missing lines	Patch %	Lines
miio/miioprotocol.py	0.00%	58 Missing and 2 partials ⚠️
miio/push_server/server.py	0.00%	5 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2039   +/-   ##
=======================================
  Coverage   82.26%   82.27%           
=======================================
  Files         197      197           
  Lines       19145    19144    -1     
  Branches     1052     1052           
=======================================
  Hits        15750    15750           
+ Misses       3218     3217    -1     
  Partials      177      177           

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