fix github workflow

Author: h908714124

.github/workflows/gradle.yml

@@ -8,9 +8,10 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v2
-    - uses: actions/setup-java@v2
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
       with:
         distribution: 'temurin'
-        java-version: 18
+        java-version: 22
+        cache: 'gradle'
     - run: ./gradlew build