Update gradle.yml switch actions to v4

git actions do not generate complete zip file with v3

.github/workflows/gradle.yml

@@ -15,9 +15,9 @@ jobs:
     runs-on: ubuntu-latest
     environment: BRouter
     steps:
-    - 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'
@@ -37,7 +37,7 @@ jobs:
         ORG_GRADLE_PROJECT_RELEASE_STORE_PASSWORD: ${{ secrets.BROUTER_STORE_PASSWORD }}
       run: ./gradlew build
     - name: Upload ZIP
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       with:
         name: ZIP
         path: brouter-server/build/distributions/brouter-*.zip