Feature/issue 235 remove dask dependency

[danielfromearth]

GitHub Issue: #235

Description

Removed the unused dependency on dask.

PR Acceptance Checklist

• Unit tests added/updated and passing.
• Integration testing
• CHANGELOG.md updated
• Documentation updated (if needed).

---

📚 Documentation preview 📚: https://stitchee--236.org.readthedocs.build/en/236/

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 23.52941% with 13 lines in your changes missing coverage. Please review.

Project coverage is 85.95%. Comparing base (affd559) to head (2bced18).

Files with missing lines	Patch %	Lines
concatenator/dimension_cleanup.py	9.09%	10 Missing ⚠️
concatenator/dataset_and_group_handling.py	50.00%	3 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #236      +/-   ##
===========================================
- Coverage    86.18%   85.95%   -0.23%     
===========================================
  Files           11       11              
  Lines          637      641       +4     
===========================================
+ Hits           549      551       +2     
- Misses          88       90       +2     

Flag	Coverage Δ
integration	44.92% <23.52%> (+0.03%)	⬆️
unittests	83.46% <23.52%> (-0.22%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.