Update pre-commit

[davorrunje]

Why are these changes needed?

pre-commit hasn't been updated in a long time and had quite old versions of ruff and black lacking the latest code formatting styles. This PR updates the pre-commit and fixes a few issues found by the latest versions of tools.

Related issue number

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 48.24%. Comparing base (ca506ba) to head (eec4f5d).

Files	Patch %	Lines
autogen/oai/completion.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #2067       +/-   ##
===========================================
+ Coverage   36.79%   48.24%   +11.44%     
===========================================
  Files          66       66               
  Lines        7060     7058        -2     
  Branches     1541     1669      +128     
===========================================
+ Hits         2598     3405      +807     
+ Misses       4234     3365      -869     
- Partials      228      288       +60     

Flag	Coverage Δ
unittests	48.11% <0.00%> (+11.31%)	⬆️

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