Fixing type annotations for THREAD_LOCAL_KEYS

Author: SimonBFrank

aws_lambda_powertools/logging/formatter.py

@@ -415,10 +415,10 @@ def _strip_none_records(records: Dict[str, Any]) -> Dict[str, Any]:
 RESERVED_FORMATTER_CUSTOM_KEYS: List[str] = inspect.getfullargspec(LambdaPowertoolsFormatter).args[1:]
 
 # ContextVar for thread local keys
-THREAD_LOCAL_KEYS: ContextVar[dict[Any, Any]] = ContextVar("THREAD_LOCAL_KEYS", default={})
+THREAD_LOCAL_KEYS: ContextVar[dict[str, Any]] = ContextVar("THREAD_LOCAL_KEYS", default={})
 
 
-def _get_context() -> ContextVar[dict[Any, Any]]:
+def _get_context() -> ContextVar[dict[str, Any]]:
     return THREAD_LOCAL_KEYS