chore: update ft_client to modern typing syntax

ft_client/freqtrade_client/ft_client.py

@@ -5,7 +5,7 @@ import logging
 import re
 import sys
 from pathlib import Path
-from typing import Any, Dict
+from typing import Any
 
 import rapidjson
 
@@ -81,7 +81,7 @@ def print_commands():
             print(f"{x}\n\t{doc}\n")
 
 
-def main_exec(parsed: Dict[str, Any]):
+def main_exec(parsed: dict[str, Any]):
     if parsed.get("show"):
         print_commands()
         sys.exit()