fix: set LC_ALL

Author: drainpixie

.github/workflows/ci-lint-test.yml

@@ -78,6 +78,8 @@ jobs:
         run: nix develop --command uv run poe test-cover
         env:
           PYTHON_VERSION: ${{ matrix.python }}
+          LC_ALL: C.UTF-8
+          LANG: C.UTF-8
 
       - name: "[EXEC] Upload coverage to Codecov"
         uses: codecov/codecov-action@v5