Added missing bounds check to dice maximum range.

src/main/java/dev/logal/logalbot/commands/fun/Dice.java

@@ -40,6 +40,12 @@ public final class Dice implements Command {
                                 .setDeletionDelay(30, TimeUnit.SECONDS);
             }
 
+            if (maximumRange < 1) {
+                return new CommandResponse("x",
+                        "Sorry " + executor.getAsMention() + ", but the maximum range must be at least 1.")
+                                .setDeletionDelay(30, TimeUnit.SECONDS);
+            }
+
             return new CommandResponse("game_die",
                     executor.getAsMention() + ", the dice rolled **" + (rng.nextInt(maximumRange) + 1) + "**.");
         }