Update android.yml

.github/workflows/android.yml

@@ -11,12 +11,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
-      - name: Set up JDK 20
+      - name: Set up JDK 21
-        uses: actions/setup-java@v3
+        uses: actions/setup-java@v4
         with:
-          java-version: '20'
+          java-version: '21'
           distribution: 'temurin'
           cache: gradle