Update celery to 5.1.0

[pyup-bot]

This PR updates Celery from 5.0.5 to 5.1.0.

Changelog

5.1.0

=====
:release-date: 2021-05-23 7:00 P.M UTC+3:00
:release-by: Omer Katz

- Fix queue names special characters replacement for Azure Service Bus. (1324)
- Add support for SQLAlchemy 1.4. (1328)
- Coerce seconds argument to a floating point number in ``Timer.enter_after``. (1330)
- Add accept parameter to SimpleQueue class. (1140)
- ``prepare_accept_content()`` now raises ``SerializerNotInstalled`` instead of ``KeyError``. (1343)

.. _version-5.1.0b1:

5.1.0rc1

========
:release-date: 2021-05-02 16.06 P.M UTC+3:00
:release-by: Omer Katz

- Celery Mailbox accept and serializer parameters are initialized from configuration. (6757)
- Error propagation and errback calling for group-like signatures now works as expected. (6746)
- Fix sanitization of passwords in sentinel URIs. (6765)
- Add LOG_RECEIVED to customize logging. (6758)

.. _version-5.1.0b2:

5.1.0b2

=======
:release-date: 2021-05-02 16.06 P.M UTC+3:00
:release-by: Omer Katz

- Fix the behavior of our json serialization which regressed in 5.0. (6561)
- Add support for SQLAlchemy 1.4. (6709)
- Safeguard against schedule entry without kwargs. (6619)
- ``task.apply_async(ignore_result=True)`` now avoids persisting the results. (6713)
- Update systemd tmpfiles path. (6688)
- Ensure AMQPContext exposes an app attribute. (6741)
- Inspect commands accept arguments again (6710).
- Chord counting of group children is now accurate. (6733)
- Add a setting :setting:`worker_cancel_long_running_tasks_on_connection_loss`
to terminate tasks with late acknowledgement on connection loss. (6654)
- The ``task-revoked`` event and the ``task_revoked` signal are not duplicated
when ``Request.on_failure`` is called. (6654)
- Restore pickling support for ``Retry``. (6748)
- Add support in the redis result backend for authenticating with a username. (6750)
- The :setting:`worker_pool` setting is now respected correctly. (6711)

.. _version-5.1.0b1:

5.1.0b1

=======
:release-date: 2021-04-01 10:30 P.M UTC+6:00
:release-by: Asiff Saif Uddin

- Wheels are no longer universal.
- Revert "Added redis transport key_prefix from envvars".
- Redis Transport: Small improvements of `SentinelChannel` (1253).
- Fix pidbox not using default channels.
- Revert "on worker restart - restore visible regardless to time (905)".
- Add vine to dependencies.
- Pin urllib3<1.26 to fix failing unittests.
- Add timeout to producer publish (1269).
- Remove python2 compatibility code (1277).
- redis: Support Sentinel with SSL.
- Support for Azure Service Bus 7.0.0 (1284).
- Allow specifying session token (1283).
- kombu/asynchronous/http/curl: implement _set_timeout.
- Disable namedtuple to object feature in simplejson (1297).
- Update to tox docker 2.0.
- SQS back-off policy (1301).
- Fixed SQS unittests.
- Fix: non kombu json message decoding in SQS transport (1306).
- Add Github Actions CI (1309).
- Update default pickle protocol version to 4 (1314).
- Update connection.py (1311).
- Drop support for the lzma backport.
- Drop obsolete code importing pickle (1315).
- Update default login method for librabbitmq and pyamqp (936).
- SQS Broker - handle STS authentication with AWS (1322).
- Min py-amqp version is v5.0.6 (1325).
- Numerous docs & example fixes.
- Use a thread-safe implementation of cached_property (1316).


.. _version-5.0.2:

5.0.6

=====
:release-date: 2021-04-01 10:45 A.M. UTC+6:00
:release-by: Asif Saif Uddin

- Change the order in which context.check_hostname and context.verify_mode get set
in SSLTransport._wrap_socket_sni. Fixes bug introduced in 5.0.3 where setting
context.verify_mode = ssl.CERT_NONE would raise
"ValueError: Cannot set verify_mode to CERT_NONE when check_hostname is enabled."
Setting context.check_hostname prior to setting context.verify_mode resolves the
issue.
- Remove TCP_USER_TIMEOUT option for Solaris (355) 
- Pass long_description to setup() (353)
- Fix for tox-docker 2.0
- Moved to GitHub actions CI (359)

.. _version-5.0.5:

Links

• PyPI: https://pypi.org/project/celery
• Changelog: https://pyup.io/changelogs/celery/
• Homepage: http://celeryproject.org
• Docs: https://pythonhosted.org/celery/