Update tests.yml

Author: nicolaspayette

.github/workflows/tests.yml

@@ -15,10 +15,10 @@ jobs:
           lfs: true
       - name: Checkout LFS objects
         run: git lfs checkout
-      - name: Set up JDK 8
+      - name: Set up JDK 11
         uses: actions/setup-java@v2
         with:
-          java-version: '8'
+          java-version: '11'
           distribution: 'adopt'
       - name: Validate Gradle wrapper
         uses: gradle/wrapper-validation-action@e6e38bacfdf1a337459f332974bb2327a31aaf4b