feat: Update to liboqs 0.12.0 #1034

Job	Run time
ci (macos-latest, stable, true)	7m 3s
ci (macos-latest, stable, false)	7m 14s
ci (macos-latest, beta, true)	6m 6s
ci (macos-latest, beta, false)	7m 13s
ci (macos-latest, nightly, true)	6m 35s
ci (macos-latest, nightly, false)	7m 42s
ci (ubuntu-latest, stable, true)	11m 29s
ci (ubuntu-latest, stable, false)	11m 35s
ci (ubuntu-latest, beta, true)	11m 54s
ci (ubuntu-latest, beta, false)	11m 59s
ci (ubuntu-latest, nightly, true)	11m 40s
ci (ubuntu-latest, nightly, false)	11m 34s
ci (windows-latest, stable, true)	13m 6s
ci (windows-latest, stable, false)	13m 11s
ci (windows-latest, beta, true)	12m 41s
ci (windows-latest, beta, false)	11m 7s
ci (windows-latest, nightly, true)	14m 0s
ci (windows-latest, nightly, false)	11m 9s
	3h 7m 18s

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