pass "ignore" as a kwarg

Signed-off-by: wiseaidev <[email protected]>

Author: wiseaidev

Diff for: aredis_om/model/model.py

@@ -1183,7 +1183,7 @@ def to_string(s):
             if isinstance(s, (str,)):
                 return s
             elif isinstance(s, bytes):
-                return s.decode("ignore")
+                return s.decode(errors="ignore")
             else:
                 return s  # Not a string we care about