修复CI/CD：更新actions版本(v3->v4)，解决弃用问题

Author: zyh616598128

.github/workflows/ci-cd.yml

@@ -14,17 +14,17 @@ jobs:
 
     steps:
     - name: Checkout code
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Set up JDK 11
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@v4
       with:
         java-version: '11'
         distribution: 'temurin'
         cache: 'maven'
 
     - name: Cache Maven dependencies
-      uses: actions/cache@v3
+      uses: actions/cache@v4
       with:
         path: ~/.m2
         key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
@@ -49,7 +49,7 @@ jobs:
       run: ./mvnw clean package -DskipTests
 
     - name: Upload build artifacts
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: java-ai-starter-jar
         path: target/*.jar