ci: Test armv7hf Linux on ubuntu-24.04-arm runner #3013

Job	Run time
cargo +1.36 build (futures-{core, io, sink})	50s
cargo minimal-versions build	25s
cargo build --target thumbv7m-none-eabi	25s
cargo +stable build	41s
cargo test (ubuntu-latest)	2m 44s
cargo build --target thumbv6m-none-eabi	24s
cargo +beta build	35s
cargo +1.63 build	1m 16s
cargo test (macos-latest)	6m 37s
cargo +nightly build	34s
cargo test (windows-latest)	4m 43s
cargo test (ubuntu-24.04-arm)	2m 47s
cargo bench	52s
cargo clippy	23s
cargo test (ubuntu-24.04-arm, armv7-unknown-linux-gnueabihf)	2m 58s
cargo test (ubuntu-latest, armv5te-unknown-linux-gnueabi)	6m 38s
cargo doc	18s
cargo hack check --feature-powerset	2m 27s
cargo test (ubuntu-latest, i686-unknown-linux-gnu)	3m 28s
cargo fmt	11s
cargo miri test	14m 49s
cargo test -Z sanitizer=address	3m 24s
cargo test -Z sanitizer=memory	4m 52s
cargo test -Z sanitizer=thread	2m 32s
	1h 4m 53s

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