fix many clones()

src/model/trip.rs

@@ -138,7 +138,7 @@ FROM user_trip WHERE trip_details_id = (SELECT trip_details_id FROM trip WHERE i
         cox: &CoxUser,
         trip: &Trip,
         max_people: i32,
-        notes: Option<String>,
+        notes: Option<&str>,
         trip_type: Option<i64>, //TODO: Move to `TripType`
     ) -> Result<(), TripUpdateError> {
         if !trip.is_trip_from_user(cox.id).await {