maven.yml 수정

Author: jermany17

.github/workflows/maven.yml

@@ -22,6 +22,9 @@ jobs:
           distribution: 'temurin'
           cache: maven
 
+      - name: Grant execute permission to mvnw
+        run: chmod +x mvnw
+
       - name: Build JAR with Maven Wrapper
         run: ./mvnw package -DskipTests