Clean up dependencies in `talpid-openvpn` #7371

Job	Run time
Prepare	7s
Generate relay list	1m 47s
Build native (x86_64, x86_64, x86_64-linux-android)	7m 1s
Build native (i686, x86, i686-linux-android)	5m 36s
Build native (aarch64, arm64-v8a, aarch64-linux-android)	7m 31s
Build native (armv7, armeabi-v7a, armv7-linux-androideabi)	6m 52s
Build app and run unit tests	14m 38s
Run instrumented tests (app)	3m 44s
Run instrumented tests (mockapi)	1m 20s
	48m 36s

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