Fix warnings

Author: kvinwang

gateway/rpc/src/generated.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/gateway.rs"));

guest-agent/rpc/src/generated.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/dstack_guest.rs"));

guest-api/src/generated/mod.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/guest_api.rs"));

host-api/src/generated/mod.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/host_api.rs"));

kms/rpc/src/generated.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/kms.rs"));

vmm/rpc/src/generated.rs

@@ -1 +1,3 @@
+#![allow(async_fn_in_trait)]
+
 include!(concat!(env!("OUT_DIR"), "/vmm.rs"));