Bootstrapping #280

Job	Run time
macos-clingo-sources	6m 5s
macos-gnupg-binaries	1m 40s
macos-clingo-binaries (macos-11)	5m 43s
fedora-clingo-sources	8m 16s
macos-clingo-binaries (macos-12)	4m 57s
macos-gnupg-sources	2m 44s
opensuse-clingo-sources	7m 30s
ubuntu-clingo-binaries	5m 11s
ubuntu-clingo-sources	7m 2s
ubuntu-clingo-binaries-and-patchelf	1m 46s
ubuntu-gnupg-binaries	2m 5s
ubuntu-gnupg-sources	1m 55s
	54m 54s

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