Stop using letters in info.plist version #320

Job	Run time
cross-compile-android (aarch64-linux-android)	7m 27s
cross-compile-ios (x86_64-apple-ios)	4m 36s
cross-compile-android (armv7-linux-androideabi)	6m 59s
cross-compile-ios (aarch64-apple-ios)	6m 11s
cross-compile-android (i686-linux-android)	6m 53s
cross-compile-ios (aarch64-apple-ios-sim)	4m 37s
lipo-ios	28s
deploy-ios	1m 11s
deploy-android	1m 8s
determine-branch	6s
build-docs	0s
deploy-docs	0s
	39m 36s

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