Switch autobuild OS to ARM runner #833

Job	Run time
Build vars & Github release (if required)	4s
Build for Android .apk (artifact+codeQL)	32m 8s
Build for Linux .deb amd64 (artifacts+codeQL)	6m 52s
Build for Linux .deb armhf (artifacts)	4m 42s
Build for Linux .deb arm64 (artifacts)	3m 8s
Build for MacOS (artifacts)	5m 31s
Build for MacOS Legacy (artifacts+CodeQL)	15m 5s
Build for iOS (artifacts)	2m 53s
Build for Windows (artifact+codeQL)	20m 53s
Build for Windows JACK (artifact)	8m 22s
Create files for .deb repository (if requested)	0s
	1h 39m 38s

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