Update to Rust 1.76, and improve CI (#129) #204

Job	Run time
Check wasm32	1m 14s
Check	2m 7s
build (macos-latest, aarch64-apple-darwin)	3m 24s
build (macos-latest, x86_64-apple-darwin)	2m 24s
Clippy	2m 5s
Test Suite	5m 3s
build (ubuntu-latest, arm-unknown-linux-musleabihf)	4m 14s
Rustfmt	17s
build (ubuntu-latest, armv7-unknown-linux-musleabihf)	4m 2s
trunk	1m 42s
build (ubuntu-latest, x86_64-unknown-linux-musl)	3m 48s
build (windows-latest, x86_64-pc-windows-msvc, .exe)	3m 55s
	34m 15s

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