Test

ci: remove ubuntu 20.04 runners #605

Job	Run time
test-cargo	43s
benchmark	2m 46s
test-cargo-all	46s
test-linux-musl-binding (22)	2m 35s
test-linux-musl-binding (20)	2m 34s
test-linux-aarch64-gnu-binding (20)	6m 22s
test-linux-aarch64-gnu-binding (22)	6m 19s
test-npm (ubuntu-latest, 22.x, x64, all)	1m 48s
test-npm (windows-latest, 20.x, x64, default)	2m 56s
test-npm (macos-latest, 20.x, arm64, default)	1m 31s
test-npm (macos-latest, 22.x, arm64, all)	1m 52s
test-npm (windows-latest, 20.x, x86, default)	3m 39s
test-npm (ubuntu-22.04, 20.x, x64, default)	1m 33s
test-npm (windows-latest, 22.x, x86, default)	2m 55s
test-npm (windows-latest, 22.x, x64, all)	5m 7s
	43m 26s

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