fix ty config

Author: fpgmaas

tests/test_mimetypes.py

@@ -25,7 +25,7 @@ def test_extensions_are_tuples_not_strings():
     If it emits plain strings, this will fail.
     """
     for mt in MimeType:  # ty: ignore[not-iterable]
-        assert isinstance(mt.extensions, tuple), f"{mt} .extensions should be tuple, got {type(mt.extensions)}"
+        assert isinstance(mt.extensions, tuple), f"{mt} .extensions should be tuple, got {type(mt.extensions)}"  # ty: ignore[unresolved-attribute]
 
 
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