Update apache-airflow-providers-slack requirement from <9,>=8 to >=8,<10

[dependabot]

Updates the requirements on apache-airflow-providers-slack to permit the latest version.

Changelog

Sourced from apache-airflow-providers-slack's changelog.

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.. contents:: Apache Airflow Releases :local: :depth: 1

.. towncrier release notes start

Airflow 2.10.4 (2024-12-16)

Significant Changes ^^^^^^^^^^^^^^^^^^^

TaskInstance priority_weight is capped in 32-bit signed integer ranges (#43611) """""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

Some database engines are limited to 32-bit integer values. As some users reported errors in weight rolled-over to negative values, we decided to cap the value to the 32-bit integer. Even if internally in python smaller or larger values to 64 bit are supported, priority_weight is capped and only storing values from -2147483648 to 2147483647.

Bug Fixes ^^^^^^^^^

• Fix stats of dynamic mapped tasks after automatic retries of failed tasks (#44300)
• Fix wrong display of multi-line messages in the log after filtering (#44457)
• Allow "/" in metrics validator (#42934) (#44515)
• Fix gantt flickering (#44488) (#44517)
• Fix problem with inability to remove fields from Connection form (#40421) (#44442)
• Check pool_slots on partial task import instead of execution (#39724) (#42693)
• Avoid grouping task instance stats by try_number for dynamic mapped tasks (#44300) (#44319)
• Re-queue task when they are stuck in queued (#43520) (#44158)
• Suppress the warnings where we check for sensitive values (#44148) (#44167)
• Fix get_task_instance_try_details to return appropriate schema (#43830) (#44133)

... (truncated)

Commits

• 2723508 Prepare docs for Nov 1st wave of providers Dec 2024 (#45042)
• 20bbc35 Unify Trigger and Clear Action button (#45097)
• 0465cdd AIP-72: Fix recursion bug with XComArg (#45112)
• 7fbe16a Update task try selector dropdown (#45117)
• cd2ad3c AIP-82 Use hash instead of repr (#44797)
• 5e0aeef Ensure UI config is fetched before other queries (#45095)
• b7e81f5 Update cli_config.py (#45110)
• f10f552 AIP-72: Logging task runner messages in supervisor (#45108)
• 72ab6b4 Bump uv to 0.5.11 (#45105)
• 0c2f18d AIP-72: Add proper serialization for XCom and Variable responses (#45104)
• Additional commits viewable in compare view

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