change return type of parse_bollean to bool (#2364)

Author: dvora-h

redis/commands/graph/query_result.py

@@ -270,7 +270,7 @@ def parse_boolean(self, value):
         """
         value = value.decode() if isinstance(value, bytes) else value
         try:
-            scalar = strtobool(value)
+            scalar = True if strtobool(value) else False
         except ValueError:
             sys.stderr.write("unknown boolean type\n")
             scalar = None