tests

feat: default to latest Lua #427

Job	Run time
test_zig_nightly (windows-latest)	6m 21s
test_zig_nightly (ubuntu-latest)	3m 7s
test_cross (windows-latest)	1m 17s
test_cross (macos-latest)	26s
test_zig_nightly (ubuntu-24.04-arm)	4m 4s
test_cross (ubuntu-24.04-arm)	20s
test_cross (ubuntu-latest)	18s
test_zig_nightly (macos-latest)	5m 50s
	21m 43s

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