allow for unicode entity dicts in saxutils (#2345)

Author: martindemello

stdlib/2and3/xml/sax/saxutils.pyi

@@ -1,12 +1,12 @@
 import sys
-from typing import AnyStr, Mapping
+from typing import Mapping, Text
 
 from xml.sax import handler
 from xml.sax import xmlreader
 
-def escape(data: AnyStr, entities: Mapping[str, str] = ...) -> AnyStr: ...
-def unescape(data: AnyStr, entities: Mapping[str, str] = ...) -> AnyStr: ...
-def quoteattr(data: AnyStr, entities: Mapping[str, str] = ...) -> AnyStr: ...
+def escape(data: Text, entities: Mapping[Text, Text] = ...) -> Text: ...
+def unescape(data: Text, entities: Mapping[Text, Text] = ...) -> Text: ...
+def quoteattr(data: Text, entities: Mapping[Text, Text] = ...) -> Text: ...
 
 class XMLGenerator(handler.ContentHandler):
     if sys.version_info >= (3, 0):