PostWe've just released v21.9.

We've just released v21.9. Thank you to everyone who contributed to this release. As usual, upgrade using pip install -U python-telegram-bot. For the full list of changes and improvements, please see the below changelog. Major Changes • Full Support for Bot API 8.1 (#4594 closes #4592) Minor Changes • Use MessageLimit.DEEP_LINK_LENGTH in helpers.create_deep_linked_url (#4597 by nemacysts) • Allow Sequence Input for allowed_updates in Application and Updater Methods (#4589 by nemacysts) Dependency Updates • Update aiolimiter requirement from ~=1.1.0 to >=1.1,<1.3 (#4595) • Bump pytest from 8.3.3 to 8.3.4 (#4596) • Bump codecov/codecov-action from 4 to 5 (#4585) • Bump pylint to v3.3.2 to Improve Python 3.13 Support (#4590 by nemacysts) • Bump srvaroa/labeler from 1.11.1 to 1.12.0 (#4586)