Fix exception in requeue code

File "/Users/prashanthpai/mysrc/sharq-testing/requeue_script.py", line 8, in <module>
    response = sq.requeue()
  File "/Users/prashanthpai/mysrc/sharq-testing/env/lib/python3.9/site-packages/sharq/queue.py", line 332, in requeue
    self.finish(
  File "/Users/prashanthpai/mysrc/sharq-testing/env/lib/python3.9/site-packages/sharq/queue.py", line 241, in finish
    raise BadArgumentException('`queue_type` has an invalid value.')
sharq.exceptions.BadArgumentException: `queue_type` has an invalid value.

Signed-off-by: Prashanth Pai <prashanth.pai@plivo.com>

Author: ppai-plivo

sharq/queue.py

@@ -315,6 +315,9 @@ def requeue(self):
             '%s:active:queue_type' % self._key_prefix)
         for queue_type in active_queue_type_list:
             # requeue all expired jobs in all queue types.
+
+            queue_type = queue_type.decode('utf-8')
+
             keys = [
                 self._key_prefix,
                 queue_type