Rust

Update README.md for rs-soroban-env (#1501) #4379

Job	Run time
check-git-rev-deps	8s
cargo-deny (advisories)	43s
build-and-test (msrv, 22, ubuntu-latest, wasm32-unknown-unknown, false)	9m 9s
cackle	1m 15s
cargo-deny (bans licenses sources)	42s
build-and-test (msrv, 22, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 32s
fmt	7s
build-and-test (latest, 22, ubuntu-latest, wasm32-unknown-unknown, false)	10m 45s
semver-checks	4m 18s
build-and-test (latest, 22, ubuntu-latest-16-cores, x86_64-unknown-linux-gnu, true)	18m 27s
publish-dry-run (ubuntu-latest, wasm32-unknown-unknown) / publish-dry-run / publish-dry-run	1h 6m 57s
publish-dry-run (ubuntu-latest, x86_64-unknown-linux-gnu) / publish-dry-run / publish-dry-run	1h 8m 13s
complete	1s
	3h 19m 17s

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