Bump celery from 5.1.0 to 5.1.1

Bumps celery from 5.1.0 to 5.1.1.

Changelog

Sourced from celery's changelog.

5.1.1

:release-date: TBD :release-by: Omer Katz

• Fix --pool=threads support in command line options parsing. (#6787)
• Fix LoggingProxy.write() return type. (#6791)
• Couchdb key is now always coerced into a string. (#6781)
• grp is no longer imported unconditionally. (#6804) This fixes a regression in 5.1.0 when running Celery in non-unix systems.
• Ensure regen utility class gets marked as done when concertised. (#6789)
• Preserve call/errbacks of replaced tasks. (#6770)
• Use single-lookahead for regen consumption. (#6799)
• Revoked tasks are no longer incorrectly marked as retried. (#6812, #6816)

.. version-5.1.0:

Commits

• ac9e181 Bump version: 5.1.0 → 5.1.1
• d4f35b1 Update changelog.
• e23fb5e Refactor and simplify Request.on_failure. (#6816)
• ba0d233 Update Changelog.
• d667f1f improv: Use single-lookahead for regen consumption
• 82f76d9 Fix for revoked tasks being moved to RETRY state
• 5d72aee fix: Preserve call/errbacks of replaced tasks (#6770)
• 536849c Ensure regen utility class gets marked as done when concretised (#6789)
• ced7493 Run pyupgrade to ensure the code is modernized. (#6808)
• d9d8250 grp is no longer imported unconditionally (#6804)
• Additional commits viewable in compare view