Build(deps): update mattermostautodriver requirement from >=11.2.1 to >=11.8.2

[dependabot]

Updates the requirements on mattermostautodriver to permit the latest version.

Changelog

Sourced from mattermostautodriver's changelog.

Unreleased """"""""""

Code ''''

Documentation '''''''''''''

Maintenance '''''''''''

• Fix websocket heartbeat task leak on reconnect (@​lizakoch)

11.8.1 """"""

Code ''''

• Backwards incompatible: Remove the deprecated dictionary-based Driver and AsyncDriver classes along with the underlying endpoints_old interface and its generator (bin/generate_endpoints_ast_deprecated.py). Driver and AsyncDriver are no longer importable from mattermostautodriver. Use TypedDriver / AsyncTypedDriver with explicit keyword arguments instead. See the migration docs <https://embl-bio-it.github.io/python-mattermost-autodriver/api_deprecation.html>_.

Documentation '''''''''''''

• Rewrite the API migration page to document the removal of the dictionary-based interface (previously the "API Deprecation" page).

.. warning:: The dictionary-based Driver / AsyncDriver interface, deprecated since 10.8.2, has been removed in version 11.8.1. Because this project follows the Mattermost server version rather than semantic versioning, this backwards-incompatible removal is not signalled by the version number. Code still using Driver, AsyncDriver or the options= dictionary argument must switch to TypedDriver / AsyncTypedDriver with explicit arguments.

10.12.0 """"""

Code ''''

• Add MattermostError base exception class
• Add ÌnvalidMattermostError for mattermost errors returning invalid error format

... (truncated)

Commits

• 8b03e1d Prepare release v11.8.2
• 5d4b676 Bugfix: Properly assert correct number of content types
• ebaad9b Merge pull request #41 from embl-bio-it/release/v11.8.1
• 2e68cbe Revert "Update endpoints to v11.8.1"
• 4cb6da6 Avoid assert for requiring content type count of 1
• 425cb47 Bugfix: Require that content type count is 1 after filter
• d059db1 Update endpoints to v11.8.1
• 293d504 Ignore application/octet-stream input option
• b49a828 Add support for HEAD requests
• 6b7ca0a Add convert_group_message_to_channel to list of duplicate arguments
• Additional commits viewable in compare view

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