chore(ci): macos-latest + windows-latest #31

Job	Run time
test (ubuntu-20.04, 5.1)	17s
test (ubuntu-20.04, 5.2)	20s
test (ubuntu-20.04, 5.3)	17s
test (ubuntu-20.04, 5.4)	17s
test (ubuntu-20.04, luajit)	16s
test (ubuntu-20.04, luajit-openresty)	17s
test (macos-11.0, 5.1)	54s
test (macos-11.0, 5.2)	53s
test (macos-11.0, 5.3)	51s
test (macos-11.0, 5.4)	2m 14s
test (macos-11.0, luajit)	51s
test (macos-11.0, luajit-openresty)	56s
test (macos-latest, 5.4)	51s
test (windows-latest, 5.1, msvc)	1m 18s
test (windows-latest, 5.2, msvc)	1m 43s
test (windows-latest, 5.3, msvc)	1m 11s
test (windows-latest, 5.4, msvc)	1m 9s
test (windows-latest, luajit, mingw)	1m 33s
	16m 8s

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