Fix compatibility with recent versions of packages

[astrofrog]

This should help fix some of the CI failures.

[codecov]

Codecov Report

Merging #2196 (298f162) into master (efcccbb) will decrease coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #2196      +/-   ##
==========================================
- Coverage   88.02%   88.00%   -0.02%     
==========================================
  Files         247      247              
  Lines       22956    22966      +10     
==========================================
+ Hits        20206    20212       +6     
- Misses       2750     2754       +4     

Impacted Files	Coverage Δ
glue/_deps.py	66.38% <ø> (ø)
glue/_mpl_backend.py	88.00% <100.00%> (+2.28%)	⬆️
glue/conftest.py	59.09% <100.00%> (+1.27%)	⬆️
glue/core/component.py	96.26% <100.00%> (ø)
glue/core/data.py	91.37% <100.00%> (ø)
glue/core/data_factories/excel.py	100.00% <100.00%> (ø)
glue/viewers/scatter/layer_artist.py	97.19% <100.00%> (-0.01%)	⬇️
glue/viewers/matplotlib/qt/widget.py	73.86% <0.00%> (-3.41%)	⬇️
glue/utils/qt/helpers.py	53.93% <0.00%> (-1.13%)	⬇️

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