Update JDK version from 21 to 24 in CI workflow

Author: ujibang

.github/workflows/ci.yml

@@ -14,14 +14,14 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@v4
 
-    - name: Set up JDK 21
+    - name: Set up JDK 24
       uses: actions/setup-java@v4
       with:
         distribution: "temurin"
-        java-version: "21"
+        java-version: "24"
         cache: "maven"
 
     - name: Build with Maven
       run: |
         mvn --version
-        mvn -B package
+        mvn -B package