Build release artifacts

Add iOS XCframework build to release artefacts. #387

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Run time

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Job	Run time
verify-input	8s
build-docs	5m 29s
build-source	1m 12s
build-android (aarch64)	4m 7s
build-android (x86_64)	19m 37s
build-iOS	0s
test-source	9m 53s
test-docs	32s
	40m 58s