fix: add support for non-ASCII filenames

[innomaxx]

Closes #226

[codecov-commenter]

Codecov Report

❌ Patch coverage is 50.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 99.35%. Comparing base (c088f5d) to head (046a332).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
crowdin_api/requester.py	50.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #233   +/-   ##
=======================================
  Coverage   99.35%   99.35%           
=======================================
  Files         178      178           
  Lines        8225     8225           
  Branches      185      185           
=======================================
  Hits         8171     8171           
  Misses         39       39           
  Partials       15       15           

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