free ziti_config memory when ZitiTunnelEvent is released (#273) #545

Job	Run time
build-tsdk (build-macosx-arm64, macOS-arm64)	40m 23s
build-tsdk (build-iphonesimulator-arm64, iOS-Simulator-arm64)	39m 29s
build-tsdk (build-iphoneos-arm64, iOS-arm64)	33m 39s
build-tsdk (build-iphonesimulator-x86_64, iOS-Simulator-x86_64)	50m 57s
build-tsdk (build-macosx-x86_64, macOS-x86_64)	29m 27s
build-cziti	5m 9s
draft-release	13s
	3h 19m 17s

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