ci: split gateway cache and tunnel integration scope

Cargo.lock

@@ -429,11 +429,14 @@ dependencies = [
  "aether-runtime",
  "aether-runtime-state",
  "aether-testkit",
+ "aether-tunnel",
+ "arc-swap",
  "async-stream",
  "axum",
  "futures-util",
  "http",
  "reqwest 0.12.28",
+ "rustls",
  "serde",
  "serde_json",
  "sha2",
@@ -671,7 +674,6 @@ name = "aether-tunnel"
 version = "0.3.17"
 dependencies = [
  "aether-contracts",
- "aether-gateway",
  "aether-gateway-tunnel",
  "aether-http",
  "aether-runtime",