fix: 캔 가격, Payment의 price 타입 Int, Double -> BigDecimal로 변경

src/main/kotlin/kr/co/vividnext/sodalive/admin/can/AdminCanRequest.kt

@@ -3,11 +3,12 @@ package kr.co.vividnext.sodalive.admin.can
 import kr.co.vividnext.sodalive.can.Can
 import kr.co.vividnext.sodalive.can.CanStatus
 import kr.co.vividnext.sodalive.extensions.moneyFormat
+import java.math.BigDecimal
 
 data class AdminCanRequest(
     val can: Int,
     val rewardCan: Int,
-    val price: Double
+    val price: BigDecimal
 ) {
     fun toEntity(): Can {
         var title = "${can.moneyFormat()} 캔"