Update resolver version in workspace (#337)

* Update resolver version in workspace

* Clippy happy

Cargo.toml

@@ -16,3 +16,4 @@ members = [
     "consensus-engine",
     "tests",
 ]
+resolver = "2"

nomos-services/http/src/http.rs

@@ -8,9 +8,11 @@ use std::{
 // crates
 use bytes::Bytes;
 use http::StatusCode;
+#[cfg(feature = "gql")]
+use overwatch_rs::services::relay::OutboundRelay;
 use overwatch_rs::services::{
     handle::ServiceStateHandle,
-    relay::{InboundRelay, OutboundRelay, RelayMessage},
+    relay::{InboundRelay, RelayMessage},
     state::{NoOperator, NoState},
     ServiceCore, ServiceData, ServiceId,
 };