GitHub Actions workflow for Dask tests

[adi611]

Types of changes

• New feature (non-breaking change which adds functionality)

Summary

This Pull Request adds the functionality to run Dask tests as part of the GitHub Actions workflow. The tests will run on pull requests and on push to the master branch.

Checklist

• I have added tests to cover my changes (if necessary)
• I have updated documentation (if necessary)

[codecov]

Codecov Report

Patch coverage has no change and project coverage change: -0.05 ⚠️

Comparison is base (426564e) 81.77% compared to head (1622cbc) 81.72%.

❗ Current head 1622cbc differs from pull request most recent head f0227a9. Consider uploading reports for the commit f0227a9 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #677      +/-   ##
==========================================
- Coverage   81.77%   81.72%   -0.05%     
==========================================
  Files          20       20              
  Lines        4400     4400              
  Branches     1264        0    -1264     
==========================================
- Hits         3598     3596       -2     
- Misses        798      804       +6     
+ Partials        4        0       -4     

Flag	Coverage Δ
unittests	81.72% <ø> (-0.05%)	⬇️

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see 4 files with indirect coverage changes

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[djarecka]

could you please add this workflow to #673, as we discussed last week.

[ghisvail]

Superseded by #686