Add hilite(shebang) argument and return type (#6316)

stubs/Markdown/markdown/extensions/codehilite.pyi

@@ -34,7 +34,7 @@ class CodeHilite:
         use_pygments: bool = ...,
         **options: Any,
     ) -> None: ...
-    def hilite(self): ...
+    def hilite(self, shebang: bool = ...) -> str: ...
 
 class HiliteTreeprocessor(Treeprocessor):
     def code_unescape(self, text): ...