Bump mypy to 1.5.1 (#10559)

test_cases/stdlib/check_dataclasses.py

@@ -87,4 +87,9 @@ def check_other_isdataclass_overloads(x: type, y: object) -> None:
         assert_type(dc.fields(y), Tuple[dc.Field[Any], ...])
         assert_type(dc.asdict(y), Dict[str, Any])
         assert_type(dc.astuple(y), Tuple[Any, ...])
-        dc.replace(y)
+
+        # No longer passes with mypy 1.5.0
+        # now that mypy gives a tailored signature for dataclasses.replace()
+        # (https://github.com/python/mypy/issues/15843):
+        #
+        # dc.replace(y)