Fix Callable type for python 3.10

Author: mielvds

lib/pyld/jsonld.py

@@ -23,7 +23,7 @@
 import warnings
 import uuid
 
-from typing import Optional, Callable
+from typing import Optional, Callable, Any
 from pyld.canon import URDNA2015, URGNA2012, UnknownFormatError
 from pyld.nquads import ParserError, parse_nquads, to_nquad, to_nquads
 from pyld.identifier_issuer import IdentifierIssuer
@@ -124,8 +124,7 @@
 INITIAL_CONTEXTS = {}
 
 # Handler to call if a key was dropped during expansion
-OnKeyDropped = Callable[[Optional[str]], ...]
-
+OnKeyDropped = Callable[[Optional[str]], Any]
 
 def log_on_key_dropped(key: Optional[str]):
     """Default behavior on ignored JSON-LD keys is to log them."""