Bump TSDK to v0.21.5 #353

Job	Run time
build-tsdk (build-iphoneos-arm64, iOS-arm64)	9m 33s
build-tsdk (build-iphoneos-arm64, iOS-arm64)	9m 33s
build-tsdk (build-iphonesimulator-x86_64, iOS-Simulator-x86_64)	4m 32s
build-tsdk (build-iphonesimulator-x86_64, iOS-Simulator-x86_64)	4m 32s
build-tsdk (build-iphonesimulator-arm64, iOS-Simulator-arm64)	4m 12s
build-tsdk (build-iphonesimulator-arm64, iOS-Simulator-arm64)	4m 12s
build-tsdk (build-macosx-arm64, macOS-arm64)	3m 33s
build-tsdk (build-macosx-arm64, macOS-arm64)	3m 33s
build-tsdk (build-macosx-x86_64, macOS-x86_64)	4m 51s
build-tsdk (build-macosx-x86_64, macOS-x86_64)	4m 51s
build-cziti	1m 58s
build-cziti	2m 3s
draft-release	0s
draft-release	0s
	57m 23s

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