ci: install libcairo2-dev on ubuntu-latest #249

Job	Run time
test-ubuntu-system-python (ubuntu-latest)	50m 31s
build (ubuntu-20.04, 3.9)	2m 21s
build (ubuntu-20.04, 3.x)	2m 30s
build (ubuntu-latest, 3.9)	1m 21s
build (ubuntu-latest, 3.x)	1m 30s
build (macos-13, 3.9)	2m 58s
build (macos-13, 3.x)	3m 40s
build (macos-latest, 3.9)	3m 34s
build (macos-latest, 3.x)	2m 5s
build (windows-2019, 3.9)	3m 20s
build (windows-2019, 3.x)	5m 28s
build (windows-latest, 3.9)	4m 1s
build (windows-latest, 3.x)	4m 15s
	1h 27m 34s

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