Merge pull request #215 from ConorMacBride/upgrade-ci-versions #184

Job	Run time
test / Load tox environments	6s
test / py39-test-mpl33 (ubuntu-latest)	3m 27s
test / py39-test-mpl33 (macos-latest)	3m 58s
test / py39-test-mpl33 (windows-latest)	4m 1s
test / py36-test-mpl20 (ubuntu-20.04)	2m 19s
test / py36-test-mpl20 (macos-latest)	3m 49s
test / py36-test-mpl20 (windows-latest)	2m 56s
test / py312-test-mpl38 (ubuntu-latest)	4m 20s
test / py312-test-mpl38 (macos-latest)	4m 57s
test / py312-test-mpl38 (windows-latest)	5m 1s
test / py39-test-mpl38 (ubuntu-latest)	3m 18s
test / py310-test-mpl38 (ubuntu-latest)	3m 27s
test / py310-test-mpl35 (ubuntu-latest)	3m 21s
test / py311-test-mpl36 (ubuntu-latest)	3m 13s
test / py311-test-mpl37 (ubuntu-latest)	3m 12s
test / py39-test-mpl33-pytest62 (ubuntu-latest)	3m 36s
test / py38-test-mpl31-pytest54 (ubuntu-latest)	2m 23s
publish / Build source and wheel distribution	51s
	58m 15s

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