Pipeline with ci image with rust 1.65 (#6243)

* Pipeline with ci image with rust 1.65

* fix a warning

* return production image

Co-authored-by: Andronik <write@reusable.software>

polkadot/node/core/runtime-api/src/tests.rs

@@ -89,7 +89,7 @@ sp_api::mock_impl_runtime_apis! {
 		}
 
 		fn availability_cores(&self) -> Vec<CoreState> {
-			let _ = self.availability_cores_wait.lock().unwrap();
+			let _lock = self.availability_cores_wait.lock().unwrap();
 			self.availability_cores.clone()
 		}