Tests

Deprecation of the top-level cmap registration and access functions in `mpl.cm` in `plot_utils.py` from matplotlib 3.9.0 #775

Job	Run time
Python 3.8 and core dependencies	1m 42s
Python 3.8 and core dependencies	1m 42s
Python 3.8 and full dependencies	3m 55s
Python 3.8 and full dependencies	3m 55s
Python 3.9 and core dependencies	1m 40s
Python 3.9 and core dependencies	1m 40s
Python 3.9 and full dependencies	1m 34s
Python 3.9 and full dependencies	1m 31s
Python 3.10 and core dependencies	1m 22s
Python 3.10 and core dependencies	1m 22s
Python 3.10 and full dependencies	2m 25s
Python 3.10 and full dependencies	2m 25s
Python 3.11 and core dependencies	1m 40s
Python 3.11 and core dependencies	1m 40s
Python 3.11 and full dependencies	2m 20s
Python 3.11 and full dependencies	2m 20s
Python 3.12 and core dependencies	1m 19s
Python 3.12 and core dependencies	1m 19s
Python 3.12 and full dependencies	2m 39s
Python 3.12 and full dependencies	2m 37s
	41m 7s

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