ci: streamline CI actions to prepare for merge queue introduction #24

Job	Run time
build-freebsd	7m 12s
build-linux-pr (dev, x86_64-unknown-linux-gnu)	7m 25s
build-linux-master	0s
build-linux-pr (dev, armv7-unknown-linux-gnueabihf)	1m 8s
build-all-features (x86_64-unknown-linux-gnu)	3m 45s
build-linux-pr (dev, aarch64-linux-android)	1m 9s
build-linux-stable	0s
build-linux-pr (release, x86_64-unknown-linux-gnu)	3m 1s
build-macos (x86_64-apple-darwin, dev)	7m 25s
build-linux-pr (release, armv7-unknown-linux-gnueabihf)	1m 57s
build-windows-master	0s
build-macos (x86_64-apple-darwin, release)	3m 59s
build-linux-pr (release, aarch64-linux-android)	2m 20s
build-macos (aarch64-apple-darwin, dev)	2m 21s
build-windows-pr (x86_64-pc-windows-msvc, dev)	7m 16s
build-macos (aarch64-apple-darwin, release)	3m 6s
build-windows-pr (x86_64-pc-windows-msvc, release)	5m 11s
build-windows-stable	0s
check	36s
doc	3s
conclusion	1s
	57m 55s

Provide feedback