Update CI config (#2768) #2216

Job	Run time
cargo +stable build	1m 14s
cargo +beta build	1m 4s
cargo +nightly build	1m 3s
cargo +1.36 build (futures-{core, io, sink})	1m 27s
cargo hack check --feature-powerset	4m 23s
cargo bench	1m 15s
cargo build --target thumbv7m-none-eabi	38s
cargo build --target thumbv6m-none-eabi	47s
cargo +1.56 build	1m 34s
cargo test (ubuntu-latest)	4m 9s
cargo test (macos-latest)	6m 31s
cargo test (windows-latest)	6m 30s
cargo test (ubuntu-latest, aarch64-unknown-linux-gnu)	5m 47s
cargo test (ubuntu-latest, armv7-unknown-linux-gnueabihf)	8m 23s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	8m 53s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	8m 59s
cargo clippy	33s
codegen	31s
cargo doc	33s
cargo fmt	16s
cargo miri test	9m 4s
cargo test -Z sanitizer=address	6m 9s
cargo test -Z sanitizer=memory	3m 49s
cargo test -Z sanitizer=thread	3m 3s
cargo minimal-versions build	47s
	1h 27m 22s

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