Update wasi-vfs to stop encoding host env vars in the module

Author: kateinoigakukun

ext/ruby_wasm/Cargo.toml

@@ -13,7 +13,7 @@ crate-type = ["cdylib"]
 magnus = { version = "0.7.1", features = ["bytes"] }
 bytes = "1"
 wizer = "6.0.0"
-wasi-vfs-cli = { git = "https://github.com/kateinoigakukun/wasi-vfs/", tag = "v0.5.3" }
+wasi-vfs-cli = { git = "https://github.com/kateinoigakukun/wasi-vfs/", tag = "v0.5.6" }
 structopt = "0.3.26"
 wit-component = "0.216.0"
 wasm-compose = "0.219.1"