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Add Conway Certificates #1411

Job	Run time
continuous-integration (ubuntu-latest, 3.11)	6h 0m 14s
build (ubuntu-latest, 3.8)	34s
build (ubuntu-latest, 3.9)	31s
build (ubuntu-latest, 3.10)	33s
build (ubuntu-latest, 3.11)	47s
build (ubuntu-latest, 3.12)	30s
build (ubuntu-latest, 3.13)	33s
build (macos-latest, 3.8)	1m 23s
build (macos-latest, 3.9)	1m 0s
build (macos-latest, 3.10)	51s
build (macos-latest, 3.11)	39s
build (macos-latest, 3.12)	32s
build (macos-latest, 3.13)	32s
	6h 8m 39s

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