(fix): force dask cluster tests to be run in same process

[ilan-gold]

I was surprised to discover that simply making the cluster a param works, now let's see about CI

• Closes #
• Tests added
• Release note added (or unnecessary)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.40%. Comparing base (a4d707d) to head (ced9c01).
Report is 45 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1932      +/-   ##
==========================================
- Coverage   86.51%   84.40%   -2.11%     
==========================================
  Files          45       45              
  Lines        6798     6798              
==========================================
- Hits         5881     5738     -143     
- Misses        917     1060     +143     

see 7 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[lumberbot-app]

Owee, I'm MrMeeseeks, Look at me.

There seem to be a conflict, please backport manually. Here are approximate instructions:

1. Checkout backport branch and update it.

git checkout 0.11.x
git pull

2. Cherry pick the first parent branch of the this PR on top of the older branch:

git cherry-pick -x -m1 eea9002efaad04f5a2dfd63955f7d91c31b793c8

3. You will likely have some merge/cherry-pick conflict here, fix them and commit:

git commit -am 'Backport PR #1932: (fix): force `dask` cluster tests to be run in same process'

4. Push to a named branch:

git push YOURFORK 0.11.x:auto-backport-of-pr-1932-on-0.11.x

5. Create a PR against branch 0.11.x, I would have named this PR:

"Backport PR #1932 on branch 0.11.x ((fix): force dask cluster tests to be run in same process)"

And apply the correct labels and milestones.

Congratulations — you did some good work! Hopefully your backport PR will be tested by the continuous integration and merged soon!

Remember to remove the Still Needs Manual Backport label once the PR gets merged.

If these instructions are inaccurate, feel free to suggest an improvement.