Update gh actions

.github/workflows/build.yml

@@ -6,15 +6,16 @@ jobs:
   build:
     strategy:
       matrix:
-        java: ["1.8", "11"]
+        java: ["8", "11"]
         os: ["ubuntu-latest"]
     runs-on: "${{ matrix.os }}"
     steps:
     - name: "Checkout Repository"
       uses: "actions/checkout@v2.3.4"
     - name: "Setup JDK ${{ matrix.java }}"
-      uses: "actions/setup-java@v1.4.3"
+      uses: "actions/setup-java@v2"
       with:
+          distribution: "adopt"
           java-version: "${{ matrix.java }}"
     - name: "Cache Gradle"
       uses: "actions/cache@v2.1.4"