add __new__() for YearEnd in PYI file

Author: Dr-Irv

pandas/_libs/tslibs/offsets.pyi

@@ -156,7 +156,12 @@ class YearOffset(SingleConstructorOffset):
 
 class BYearEnd(YearOffset): ...
 class BYearBegin(YearOffset): ...
-class YearEnd(YearOffset): ...
+
+class YearEnd(YearOffset):
+    def __new__(
+        cls, n: int = ..., normalize: bool = ..., month: int | None = ...
+    ) -> Self: ...
+
 class YearBegin(YearOffset): ...
 
 class QuarterOffset(SingleConstructorOffset):