Update xml for 3.14 (#14119)

stdlib/xml/sax/__init__.pyi

@@ -1,3 +1,4 @@
+import sys
 from _typeshed import ReadableBuffer, StrPath, SupportsRead, _T_co
 from collections.abc import Iterable
 from typing import Protocol
@@ -10,7 +11,7 @@ from xml.sax._exceptions import (
     SAXReaderNotAvailable as SAXReaderNotAvailable,
 )
 from xml.sax.handler import ContentHandler as ContentHandler, ErrorHandler as ErrorHandler
-from xml.sax.xmlreader import XMLReader
+from xml.sax.xmlreader import InputSource as InputSource, XMLReader
 
 class _SupportsReadClose(SupportsRead[_T_co], Protocol[_T_co]):
     def close(self) -> None: ...
@@ -23,3 +24,19 @@ def make_parser(parser_list: Iterable[str] = ()) -> XMLReader: ...
 def parse(source: _Source, handler: ContentHandler, errorHandler: ErrorHandler = ...) -> None: ...
 def parseString(string: ReadableBuffer | str, handler: ContentHandler, errorHandler: ErrorHandler | None = ...) -> None: ...
 def _create_parser(parser_name: str) -> XMLReader: ...
+
+if sys.version_info >= (3, 14):
+    __all__ = [
+        "ContentHandler",
+        "ErrorHandler",
+        "InputSource",
+        "SAXException",
+        "SAXNotRecognizedException",
+        "SAXNotSupportedException",
+        "SAXParseException",
+        "SAXReaderNotAvailable",
+        "default_parser_list",
+        "make_parser",
+        "parse",
+        "parseString",
+    ]