chore: switch Reference to using an actual reference

crates/delta/src/routes/servers/invites_fetch.rs

@@ -15,7 +15,7 @@ use rocket::{serde::json::Json, State};
 pub async fn invites(
     db: &State<Database>,
     user: User,
-    target: Reference,
+    target: Reference<'_>,
 ) -> Result<Json<Vec<v0::Invite>>> {
     let server = target.as_server(db).await?;
     let mut query = DatabasePermissionQuery::new(db, &user).server(&server);