Update to Rust 1.76, and improve CI #197

Job	Run time
Check	2m 6s
Test Suite	4m 56s
Check wasm32	1m 21s
Clippy	2m 18s
Rustfmt	19s
trunk	1m 40s
build (macos-latest, aarch64-apple-darwin)	3m 4s
build (macos-latest, x86_64-apple-darwin)	6m 18s
build (ubuntu-latest, arm-unknown-linux-musleabihf)	3m 51s
build (ubuntu-latest, armv7-unknown-linux-musleabihf)	4m 5s
build (ubuntu-latest, x86_64-unknown-linux-musl)	3m 56s
build (windows-latest, x86_64-pc-windows-msvc, .exe)	3m 40s
	37m 34s

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