[xmldiff] Update to 3.0.* (#16041)

Author: donbarbos

stubs/xmldiff/METADATA.toml

@@ -1,2 +1,2 @@
-version = "2.7.*"
+version = "3.0.*"
 upstream-repository = "https://github.com/Shoobx/xmldiff"

stubs/xmldiff/xmldiff/actions.pyi

@@ -21,10 +21,12 @@ class MoveNode(NamedTuple):
 class UpdateTextIn(NamedTuple):
     node: str
     text: Incomplete
+    oldtext: Incomplete | None = None
 
 class UpdateTextAfter(NamedTuple):
     node: str
     text: Incomplete
+    oldtext: Incomplete | None = None
 
 class UpdateAttrib(NamedTuple):
     node: str

stubs/xmldiff/xmldiff/patch.pyi

@@ -1,5 +1,9 @@
 from _typeshed import Incomplete
 from collections.abc import Generator
+from re import Pattern
+from typing import Final
+
+DIFF_SPLIT: Final[Pattern[str]]
 
 class Patcher:
     @property