Update soroban-env-* to 21.2.1 (#1323) #4171

Job	Run time
check-git-rev-deps	8s
semver-checks	5m 28s
cargo-deny (advisories)	40s
fmt	6s
cargo-deny (bans licenses sources)	43s
build-and-test (msrv, ubuntu-latest, x86_64-unknown-linux-gnu)	12m 25s
build-fuzz	3m 22s
build-and-test (msrv, ubuntu-latest, aarch64-unknown-linux-gnu, true)	7m 49s
docs	5m 35s
build-and-test (msrv, windows-latest, x86_64-pc-windows-msvc)	16m 52s
readme	5m 21s
build-and-test (latest, ubuntu-latest, x86_64-unknown-linux-gnu)	12m 1s
build-and-test (latest, ubuntu-latest, aarch64-unknown-linux-gnu, true)	7m 33s
build-and-test (latest, windows-latest, x86_64-pc-windows-msvc)	14m 48s
publish-dry-run (ubuntu-latest, wasm32-unknown-unknown) / publish-dry-run / publish-dry-run	5m 5s
publish-dry-run (ubuntu-latest, x86_64-unknown-linux-gnu, --feature-powerset --exclude-features d... / publish-dry-run / publish-dry-run	5m 52s
complete	1s
	1h 43m 49s

Provide feedback