Upgrade rand to ~0.9

src/policy/simulation/random.rs

@@ -4,14 +4,14 @@
 
 use crate::state::GameState;
 use crate::tree::node::{Node, RewardVal};
-use rand::prelude::SliceRandom;
+use rand::prelude::IndexedRandom;
 use std::collections::HashMap;
 
 pub fn simulate<S: GameState>(node: &Node<S>) -> HashMap<S::Player, RewardVal> {
     let mut state: S = node.state.clone();
     while !state.is_terminal() {
         let legal_actions = state.get_legal_actions();
-        let action = legal_actions.choose(&mut rand::thread_rng()).unwrap();
+        let action = legal_actions.choose(&mut rand::rng()).unwrap();
         state = state.state_after_action(&action);
     }
     state.rewards_for_players()