test(client): use real server for compliant peers

crates/irtt-client/Cargo.toml

@@ -27,3 +27,7 @@ tokio = ["dep:tokio"]
 
 [package.metadata.docs.rs]
 all-features = true
+
+[dev-dependencies]
+irtt-server.workspace = true
+tokio = { version = "1.53.1", default-features = false, features = ["rt", "sync"] }