refac: brandonwamboldt/utilphp 의존 코드 수정

- 실제 의존성 제거는 이후에에

hwe/sammo/ActionSpecialWar/che_귀병.php

@@ -30,7 +30,7 @@ class che_귀병 extends \sammo\BaseSpecial{
         if($statName === 'warMagicSuccessProb'){
             return $value + 0.2;
         }
-        if(\sammo\Util::starts_with($statName, 'dex')){
+        if(str_starts_with($statName, 'dex')){
             $myArmType = 'dex'.GameUnitConst::T_WIZARD;
             $opposeArmType = 'dex'.$aux['opposeType']->armType;;
             if($aux['isAttacker'] && $opposeArmType === $statName){