Bootstrapping #406

Job	Run time
macos-clingo-sources	8m 35s
fedora-clingo-sources	4m 35s
macos-gnupg-binaries	18m 21s
macos-clingo-binaries (macos-11)	6m 51s
macos-clingo-binaries (macos-12)	7m 17s
macos-gnupg-sources	2m 42s
opensuse-clingo-sources	4m 20s
ubuntu-clingo-binaries	4m 30s
ubuntu-clingo-binaries-and-patchelf	1m 26s
ubuntu-clingo-sources	3m 57s
ubuntu-gnupg-binaries	1m 27s
ubuntu-gnupg-sources	1m 37s
	1h 5m 38s

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