update typing

Author: FynnBe

bioimageio/core/tensor.py

@@ -250,7 +250,7 @@ def tagged_shape(self):
         return self.sizes
 
     def argmax(self) -> Mapping[AxisId, int]:
-        ret = self._data.argmax(...)  # pyright: ignore[reportUnknownArgumentType]
+        ret = self._data.argmax(...)
         assert isinstance(ret, dict)
         return {cast(AxisId, k): cast(int, v.item()) for k, v in ret.items()}