Add CZITI_TEST_INSECURE_KEYS compile flag for CI integration tests #698

Job	Run time
build-tsdk (build-iphonesimulator-x86_64, iOS-Simulator-x86_64)	1m 57s
build-tsdk (build-macosx-arm64, macOS-arm64)	1m 35s
build-tsdk (build-iphonesimulator-arm64, iOS-Simulator-arm64)	2m 26s
build-tsdk (build-iphoneos-arm64, iOS-arm64)	2m 16s
build-tsdk (build-macosx-x86_64, macOS-x86_64)	3m 4s
build-cziti	6m 25s
draft-release	0s
	17m 43s

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