Update leenooks/laravel and framework updates

app/Models/User.php

@@ -266,12 +266,12 @@ class User extends Authenticatable implements IDs
 	/**
 	 * Determine if the user is an admin of the user with $id
 	 *
-	 * @param $id
+	 * @param User|null $user
 	 * @return bool
 	 */
-	public function isAdmin($id): bool
+	public function isAdmin(User $user=NULL): bool
 	{
-		return $id AND $this->isReseller() AND $this->accounts->pluck('user_id')->contains($id);
+		return $user->exists AND $this->isReseller() AND $this->accounts->pluck('user_id')->contains($user->id);
 	}
 
 	/**