jdk 16 for workflow

.github/workflows/gradle.yml

@@ -1,24 +1,18 @@
 # This workflow will build a Java project with Gradle
 # For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle
-
 name: Java CI with Gradle
-
 on: [push, pull_request]
-
 jobs:
   build:
-
     runs-on: ubuntu-latest
-
     steps:
     - uses: actions/checkout@v2
-    - name: Set up JDK 11
-      uses: actions/setup-java@v1
+    - uses: actions/setup-java@v1
       with:
-        java-version: 11
+        java-version: 16
     - name: Build with Gradle
       run: ./gradlew build
     - uses: actions/upload-artifact@v2
       with:
         name: artifact
-        path: build/libs
+        path: build/libs/