Ensure ExtensionBuilder respects the proxy settings (#14899)

Release Notes:

- N/A

---------

Co-authored-by: Marshall Bowers <elliott.codes@gmail.com>

crates/extension_cli/Cargo.toml

@@ -16,8 +16,9 @@ path = "src/main.rs"
 anyhow.workspace = true
 clap = { workspace = true, features = ["derive"] }
 env_logger.workspace = true
-fs.workspace = true
 extension = { workspace = true, features = ["no-webrtc"] }
+fs.workspace = true
+http.workspace = true
 language.workspace = true
 log.workspace = true
 rpc.workspace = true