More parallel CI workflows

[chayim]

Pull Request check-list

Please make sure to review and check all of these items:

• Does $ tox pass with this change (including linting)?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

Please provide a description of the change here.

[codecov-commenter]

Codecov Report

Merging #1881 (fc0586d) into master (f807f3b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1881   +/-   ##
=======================================
  Coverage   93.61%   93.61%           
=======================================
  Files          76       76           
  Lines       16268    16268           
=======================================
  Hits        15230    15230           
  Misses       1038     1038           

Impacted Files	Coverage Δ
tests/test_cluster.py	98.28% <0.00%> (ø)

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