Add timeout while searching for git diffs in LLMs response

[azrv]

• Add regex dependency

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 2 lines in your changes are missing coverage. Please review.

Project coverage is 84.13%. Comparing base (9486b87) to head (b0d3c1e).

Files	Patch %	Lines
gpt_engineer/core/chat_to_files.py	75.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1067      +/-   ##
==========================================
- Coverage   84.23%   84.13%   -0.10%     
==========================================
  Files          26       26              
  Lines        1389     1393       +4     
==========================================
+ Hits         1170     1172       +2     
- Misses        219      221       +2     

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