PatchWork AutoFix

[patched-admin]

This pull request from patched fixes 3 issues.

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• File changed: patchwork/app.py
  Fix vulnerability in find_patchflow function

  Avoid loading modules using importlib.import_module() with untrusted input. Removed usage of importlib.import_module() and ensured only safe modules are loaded using spec_from_file_location().

• File changed: patchwork/common/utils/step_typing.py
  Fixed vulnerability by avoiding dynamic values in importlib.import_module()

  Avoided dynamic values in importlib.import_module() by using a whitelist approach to prevent loading arbitrary code.

• File changed: patchwork/common/utils/dependency.py
  Fix vulnerability in importlib.import_module()

  Avoid using dynamic values in importlib.import_module() by checking the name against a whitelist before importing the module.