Update build.yaml

Author: jurgenvinju

.github/workflows/build.yaml

@@ -17,7 +17,7 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - name: Set up JDK 11
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
           java-version: 11