Update the uv LockFileUpdater regex

[markhallen]

What are you trying to accomplish?

There is a regex error thrown when parsing uv.lock files.

Follows #11795

Anything you want to highlight for special attention from reviewers?

We replicated the issue and tested the solution using a dry run:

./bin/dry-run.rb uv dsp-testing/dependabot-uv

Failing dry run output

/home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:191:in `declaration_regex': end pattern with unmatched parenthesis: / (RegexpError)
          \[project\]\s*(?:\s*#.*?)*?\n.*?
          (?<declaration>
            (?:^\s*|["'])requests["']?\s*=\s*["'].*?==2\.31\.0["']
          )
          .*$
        /mix
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:88:in `replace_dep'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:76:in `block in updated_pyproject_content'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:73:in `each'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:73:in `updated_pyproject_content'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:52:in `fetch_updated_dependency_files'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater/lock_file_updater.rb:35:in `updated_dependency_files'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater.rb:78:in `updated_uv_lock_files'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/call_validation.rb:270:in `bind_call'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/call_validation.rb:270:in `validate_call'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/_methods.rb:277:in `block in _on_method_added'
      from /home/dependabot/uv/lib/dependabot/uv/file_updater.rb:32:in `updated_dependency_files'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/call_validation.rb:270:in `bind_call'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/call_validation.rb:270:in `validate_call'
      from /usr/local/lib/ruby/gems/3.3.0/gems/sorbet-runtime-0.5.11577/lib/types/private/methods/_methods.rb:277:in `block in _on_method_added'
      from bin/dry-run.rb:739:in `block in <main>'
      from bin/dry-run.rb:647:in `each'
      from bin/dry-run.rb:647:in `<main>'
[dependabot-core-dev] ~ $ 

How will you know you've accomplished your goal?

We successfully completed the previously failing dry run: ./bin/dry-run.rb uv dsp-testing/dependabot-uv.

Checklist

• I have run the complete test suite to ensure all tests and linters pass.
• I have thoroughly tested my code changes to ensure they work as expected, including adding additional tests for new functionality.
• I have written clear and descriptive commit messages.
• I have provided a detailed description of the changes in the pull request, including the problem it addresses, how it fixes the problem, and any relevant details about the implementation.
• I have ensured that the code is well-documented and easy to understand.