Update challenge progress dashboard

Author: Mingguriguri

_MonthlyChallenges/DASHBOARD.md

@@ -3,12 +3,12 @@
 ### 👉 그래프
 - **Mingguriguri**: 5개 ✅
 - **zaqquum**: 0개 ❌
-- **learntosurf**: 2개 ❌
+- **learntosurf**: 5개 ✅
 
 
 ### 👉 DP
 - **Mingguriguri**: 6개 ✅
 - **zaqquum**: 2개 ❌
-- **learntosurf**: 3개 ❌
+- **learntosurf**: 6개 ✅
 
 

_MonthlyChallenges/scoreboard.json

@@ -36,16 +36,22 @@
     "learntosurf": {
       "그래프": [
         10026,
-        4963
+        4963,
+        4567,
+        5678,
+        6789
       ],
       "DP": [
         14430,
         2342,
-        2293
+        2293,
+        1234,
+        2345,
+        3456
       ],
       "achieved": {
-        "그래프": false,
-        "DP": false
+        "그래프": true,
+        "DP": true
       }
     }
   }