Fix Translator type hint

Author: marcoffee

unidecode/__init__.py

@@ -21,7 +21,7 @@
 from pathlib import Path
 
 Cache = {} # type: Dict[int, Optional[Sequence[Optional[str]]]]
-Translator: Optional[dict[str, int]] = None
+Translator = None # type: Optional[Dict[str, int]]
 
 class UnidecodeError(ValueError):
     def __init__(self, message: str, index: Optional[int] = None) -> None: