soroban-rpc: refactor libpreflight (stellar#875)

Author: 2opremio

Cargo.lock

@@ -7,10 +7,10 @@ publish = false
 crate-type = ["staticlib"]
 
 [dependencies]
-# TODO: base64 and thiserror are also used by the CLI,
-#       should we make them workspace dependencies?
+anyhow = "1.0.75"
 base64 = { workspace = true }
 thiserror = { workspace = true }
 libc = "0.2.147"
 sha2 = { workspace = true }
 soroban-env-host = { workspace = true }
+