(TEST) Prepare release: 8.9.10

[github-actions]

⚡ Merging this PR will automatically create a GitHub Release & publish the package ⚡

This PR was created by the Release stage 1 - create release PR (Cylc 8+ only) workflow, triggered by @MetRonnie

Tests:

• Tests last run on master:
• ✔️ Build check passed - see the workflow run (number 9) for more info

Checklist:

• Milestone complete?
  ⚠️ Couldn't find milestone matching 8.9.10
• Changelog up-to-date?
  • Examine pull requests made since the last release
  • "Released on" date updated? ⚠️ couldn't automatically set date

Next steps:

• @MetRonnie should request 1 or 2 reviews
• If any further changes are needed, push to this PR branch
• After merging, the bot will comment below with a link to the release (if not, look at the PR checks tab)

[github-actions]

❌ failure

Check the run

Revert the release commit and rerun the release process to retry.

Alternatively you can still publish the dist to PyPI manually:

(Make sure you have commit 778efa4fdb4c101d9c8f58d84764990b9ad0f38a checked out)

# Create the build (old style for setup.py projects)
python3 setup.py bdist_wheel sdist

# Create the build (PEP517)
python -m build

# Upload your build to PyPI
twine upload dist/*

Then create a GitHub release (this link pre-populates the tag and target fields).

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Comment created by workflow: Release stage 2 - auto publish, run: 8