CI: Don't publish docs for 0.x test releases #10

Job	Run time
create-release	3s
build-macos (x86_64)	1m 8s
build-windows	2m 29s
build-macos (aarch64)	1m 7s
build-linux (x86_64, musl)	1m 28s
build-linux (aarch64, musl)	1m 31s
build-linux (i686, musl)	1m 26s
build-linux (armv7, musleabihf)	1m 25s
build-linux (arm, musleabi)	1m 24s
build-linux (arm, musleabihf)	1m 27s
upload-license (MIT)	6s
upload-completions (bash)	6s
upload-license (APACHE)	3s
upload-completions (fish)	6s
upload-completions (zsh)	3s
upload-release (linux-x86_64-musl)	17s
upload-release (linux-aarch64-musl)	5s
upload-release (linux-i686-musl)	9s
upload-release (linux-armv7-musleabihf)	5s
upload-release (linux-arm-musleabi)	16s
upload-release (linux-arm-musleabihf)	7s
upload-release (macos-x86_64)	7s
upload-release (macos-aarch64)	10s
upload-release (windows-x86_64-msvc)	9s
	15m 17s

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