Test zig 0.12.0 on CI #1037

Job	Run time
Check	21s
spellcheck	12s
Clippy	19s
Rustfmt	10s
Test Suite (ubuntu-latest, 1.70.0, 0.12.0)	11m 35s
Test Suite (ubuntu-latest, stable, 0.12.0)	9m 45s
Test Suite (ubuntu-latest, nightly, 0.12.0)	9m 48s
Test Suite (macos-13, 1.70.0, 0.12.0)	18m 38s
Test Suite (macos-13, stable, 0.12.0)	14m 37s
Test Suite (macos-13, nightly, 0.12.0)	14m 39s
Test Suite (windows-latest, 1.70.0, 0.12.0)	15m 10s
Test Suite (windows-latest, stable, 0.12.0)	17m 4s
Test Suite (windows-latest, nightly, 0.12.0)	15m 15s
	2h 7m 33s

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