Merge for v8.1.1

[raphaelquast]

A quick bugfix release to address issues with colorbars on multiple layers

EOmaps v8.0.1

🔨 Fixes

• ❗ fix colorbars on different layers only show after additional draw
• handle numpy linalg errors resulting from singular colorbar axes

[codecov]

Codecov Report

Attention: Patch coverage is 57.14286% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 75.29%. Comparing base (e969c4c) to head (034ce66).
Report is 1 commits behind head on master.

Files	Patch %	Lines
eomaps/_blit_manager.py	40.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #238      +/-   ##
==========================================
- Coverage   75.30%   75.29%   -0.01%     
==========================================
  Files          26       26              
  Lines       11754    11754              
==========================================
- Hits         8851     8850       -1     
- Misses       2903     2904       +1     

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