feat: Update to liboqs 0.12.0 (#272) #1044

Job	Run time
ci (macos-latest, stable, true)	6m 38s
ci (macos-latest, stable, false)	5m 55s
ci (macos-latest, beta, true)	6m 9s
ci (macos-latest, beta, false)	5m 52s
ci (macos-latest, nightly, true)	7m 23s
ci (macos-latest, nightly, false)	6m 20s
ci (ubuntu-latest, stable, true)	11m 57s
ci (ubuntu-latest, stable, false)	11m 35s
ci (ubuntu-latest, beta, true)	11m 57s
ci (ubuntu-latest, beta, false)	11m 32s
ci (ubuntu-latest, nightly, true)	10m 1s
ci (ubuntu-latest, nightly, false)	11m 27s
ci (windows-latest, stable, true)	13m 35s
ci (windows-latest, stable, false)	14m 15s
ci (windows-latest, beta, true)	11m 41s
ci (windows-latest, beta, false)	12m 23s
ci (windows-latest, nightly, true)	13m 27s
ci (windows-latest, nightly, false)	11m 10s
	3h 3m 17s

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