update workflow

.github/workflows/debug.yml

@@ -17,18 +17,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - name: set up JDK 1.8
+      - name: set up JDK 11
         uses: actions/setup-java@v1
         with:
-          java-version: 1.8
+          java-version: 11
 
       - name: Grant rights
         run: chmod +x ./gradlew
 
-      - name: Build project with Gradle
-        run: ./gradlew build
-
-      - name: Build Debug APK with Gradle
+      - name: Build debug APK with Gradle
         run: ./gradlew assembleDebug
 
       - name: Upload Debug