use isinstance in builtin crc32 (#2329)

Author: FlxB2

kafka/record/_crc32c.py

@@ -105,7 +105,7 @@ def crc_update(crc, data):
     Returns:
         32-bit updated CRC-32C as long.
     """
-    if type(data) != array.array or data.itemsize != 1:
+    if not isinstance(data, array.array) or data.itemsize != 1:
         buf = array.array("B", data)
     else:
         buf = data