Bump bs58 from 0.3.1 to 0.4.0

Bumps [bs58](https://github.com/mycorrhiza/bs58-rs) from 0.3.1 to 0.4.0.
- [Release notes](https://github.com/mycorrhiza/bs58-rs/releases)
- [Commits](Nullus157/bs58-rs@0.3.1...0.4.0)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -20,7 +20,7 @@ solana-sdk = "1.4.8"
 solana-program = "1.4.8"
 spl-stake-pool = { path="../program", features = [ "no-entrypoint" ] }
 spl-token = { path="../../token/program", features = [ "no-entrypoint" ]  }
-bs58 = "0.3.1"
+bs58 = "0.4.0"
 
 [[bin]]
 name = "spl-stake-pool"