Bump kombu from 5.4.2 to 5.6.1

[dependabot]

Bumps kombu from 5.4.2 to 5.6.1.

Release notes

Sourced from kombu's releases.

v5.6.1

What's Changed

• fix: ensure hub close does also remove global event loop reference by @​oliverhaas in celery/kombu#2404
• fix: default value for SQS's receive message by @​cuducos in celery/kombu#2405
• Feat: add support for credential_provider to redis broker by @​alaminopu in celery/kombu#2408
• Prepare for release: v5.6.1 by @​Nusnus in celery/kombu#2416

New Contributors

• @​oliverhaas made their first contribution in celery/kombu#2404
• @​cuducos made their first contribution in celery/kombu#2405
• @​alaminopu made their first contribution in celery/kombu#2408

Full Changelog: celery/kombu@v5.6.0...v5.6.1

v5.6.0

Key Highlights

QoS Max Prefetch Limit celery/kombu#2348

Prevent Out Of Memory crashes when queues flood with ETA/countdown tasks. The new optional max_prefetch parameter caps how many messages workers hold in memory. Defaults to unlimited (None) to preserve existing behavior.

from kombu.common import QoS
Limit prefetch to maximum 100 messages
qos = QoS(callback=consumer.qos, initial_value=10, max_prefetch=100)

Redis Polling Interval Support celery/kombu#2346

Fix Redis transport to properly propagate polling_interval and brpop_timeout from transport_options to the Channel's _brpop_start timeout.

app.conf.broker_transport_options = {"polling_interval": 10}

Leave it unset to keep the familiar 1-second default, or raise it to slow down idle polling.

Pidbox RabbitMQ 4.x Compatibility celery/kombu#2338

Let pidbox queues work on RabbitMQ 4.x brokers that reject transient, non-exclusive queues.

MongoDB Transport Improvements celery/kombu#2347

URI options now come through lowercase and flattened again, so settings like replicaSet=test_rs show up as options['replicaset'].

Resource Pool Gevent Compatibility celery/kombu#2314

Restore compatibility with recent gevent releases that monkey-patch the standard library queue.

... (truncated)

Changelog

Sourced from kombu's changelog.

5.6.1

:release-date: 25 November, 2025 :release-by: Tomer Nosrati

What's Changed

- fix: ensure hub close does also remove global event loop reference ([#2404](https://github.com/celery/kombu/issues/2404))
- fix: default value for SQS's receive message ([#2405](https://github.com/celery/kombu/issues/2405))
- Feat: add support for credential_provider to redis broker ([#2408](https://github.com/celery/kombu/issues/2408))
- Prepare for release: v5.6.1 ([#2416](https://github.com/celery/kombu/issues/2416))
.. _version-5.6.0:
5.6.0
:release-date: 1 November, 2025
:release-by: Tomer Nosrati
Key Highlights

QoS Max Prefetch Limit

PR [#2348](https://github.com/celery/kombu/issues/2348) <https://github.com/celery/kombu/pull/2348>_

Prevent Out Of Memory crashes when queues flood with ETA/countdown tasks. The new optional max_prefetch parameter caps how many messages workers hold in memory. Defaults to unlimited (None) to preserve existing behavior.

.. code-block:: python

from kombu.common import QoS
Limit prefetch to maximum 100 messages
qos = QoS(callback=consumer.qos, initial_value=10, max_prefetch=100)

Redis Polling Interval Support

PR [#2346](https://github.com/celery/kombu/issues/2346) <https://github.com/celery/kombu/pull/2346>_

Fix Redis transport to properly propagate polling_interval and brpop_timeout from transport_options to the Channel's _brpop_start timeout.

.. code-block:: python

app.conf.broker_transport_options = {"polling_interval": 10}

Leave it unset to keep the familiar 1-second default, or raise it to slow down idle polling.

... (truncated)

Commits

• 5208431 Prepare for release: v5.6.1 (#2416)
• 24ade8f [pre-commit.ci] pre-commit autoupdate (#2415)
• 8822511 Bump actions/checkout from 5 to 6 (#2412)
• 4a57bfe Feat: add support for credential_provider to redis broker (#2408)
• b67cbe6 Revert "Bump protobuf from 6.32.1 to 6.33.1 (#2409)"
• 3454c88 Bump protobuf from 6.32.1 to 6.33.1 (#2409)
• baa625d [pre-commit.ci] pre-commit autoupdate (#2407)
• c89be8c fix: default value for SQS's receive message (#2405)
• ecbb733 fix: ensure hub close does also remove global event loop reference (#2404)
• 4e74395 Prepare for release: v5.6.0 (#2402)
• Additional commits viewable in compare view

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