Build release artifacts

Add iOS XCframework build to release artefacts. #385

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Run time

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Job	Run time
verify-input	11s
build-source	1m 5s
build-docs	5m 16s
build-android (aarch64)	7s
build-android (x86_64)	6s
build-iOS	0s
test-source	9m 38s
test-docs	34s
	16m 57s