Update datajoint/blob.py

Co-authored-by: Raphael Guzman <38401847+guzman-raphael@users.noreply.github.com>

Author: kabilar

datajoint/blob.py

@@ -5,7 +5,7 @@
 
 import zlib
 from itertools import repeat
-import collections.abc
+import collections
 from decimal import Decimal
 import datetime
 import uuid