chore: bump rust

and fix new lints that come with it

src/api/appservice_server.rs

@@ -10,12 +10,12 @@ use tracing::warn;
 ///
 /// Only returns None if there is no url specified in the appservice registration file
 #[tracing::instrument(skip(request))]
-pub(crate) async fn send_request<T: OutgoingRequest>(
+pub(crate) async fn send_request<T>(
     registration: Registration,
     request: T,
 ) -> Result<Option<T::IncomingResponse>>
 where
-    T: Debug,
+    T: OutgoingRequest + Debug,
 {
     let destination = match registration.url {
         Some(url) => url,