Bump version to 8.0.0 #1320

Job	Run time
run-test (macOS, 15.4)	1s
run-test (macOS, 15.4)	1m 2s
run-test (macOS, 15.4)	1m 2s
run-test (macOS, 16.0)	1s
run-test (macOS, 16.0)	1m 17s
run-test (macOS, 16.0)	1m 17s
run-test (iOS Simulator,name=iPhone 15, 15.4)	17m 22s
run-test (iOS Simulator,name=iPhone 15, 15.4)	9m 11s
run-test (iOS Simulator,name=iPhone 15, 15.4)	9m 11s
run-test (iOS Simulator,name=iPhone 15, 16.0)	2m 26s
run-test (iOS Simulator,name=iPhone 15, 16.0)	2m 26s
run-test (iOS Simulator,name=iPhone 15, 16.0)	2m 26s
run-test (tvOS Simulator,name=Apple TV, 15.4)	1s
run-test (tvOS Simulator,name=Apple TV, 15.4)	1m 25s
run-test (tvOS Simulator,name=Apple TV, 15.4)	1m 25s
run-test (tvOS Simulator,name=Apple TV, 16.0)	1s
run-test (tvOS Simulator,name=Apple TV, 16.0)	17s
run-test (tvOS Simulator,name=Apple TV, 16.0)	1m 7s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 15.4)	1s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 15.4)	28s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 15.4)	28s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 16.0)	1s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 16.0)	16s
run-test (watchOS Simulator,name=Apple Watch Series 9 (41mm), 16.0)	29s
	53m 41s

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