Updated version to 1.7 #775

Job	Run time
linux	5m 14s
linux-latest-dev	3m 30s
linux-oldest	3m 6s
linux-per-backend	5m 28s
windows	2m 47s
android-sdl	6m 11s
macos	2m 0s
windows-clang	4m 59s
windows-oldest	6m 49s
windows-static-mt	5m 41s
android-sfml-graphics	2m 36s
ios-sdl	1m 30s
ios-sfml-graphics	31s
nightly-build-windows-visual-studio	0s
	50m 22s

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