[FIX] bump matplotlib version and update usage of get_cmap #1117

Job	Run time
Determine if CI should be skipped	6s
Corrector performance tests (ubuntu-latest, 3.8)	33m 27s
CBMR ImportError tests (ubuntu-latest, 3.8)	1m 0s
Unit tests with minimum dependency versions (ubuntu-latest, 3.8)	40m 29s
Unit tests (ubuntu-latest, 3.8)	40m 7s
Estimator performance tests (ubuntu-latest, 3.8)	7m 13s
Smoke performance tests (ubuntu-latest, 3.8)	21m 3s
Unit tests (ubuntu-latest, 3.9)	37m 50s
Unit tests (ubuntu-latest, 3.10)	38m 11s
Unit tests (ubuntu-latest, 3.11)	37m 48s
Unit tests (macos-latest, 3.8)	1h 36m 56s
Unit tests (macos-latest, 3.9)	48m 33s
Unit tests (macos-latest, 3.10)	40m 30s
Unit tests (macos-latest, 3.11)	43m 36s
Upload coverage	11s
	8h 7m 0s

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