chore: Bump Rust to 1.87 (#30739)

Closes #ISSUE

Release Notes:

- N/A

crates/remote/src/ssh_session.rs

@@ -925,7 +925,7 @@ impl SshRemoteClient {
 
                             if missed_heartbeats != 0 {
                                 missed_heartbeats = 0;
-                                this.update(cx, |this, mut cx| {
+                                let _ =this.update(cx, |this, mut cx| {
                                     this.handle_heartbeat_result(missed_heartbeats, &mut cx)
                                 })?;
                             }