Fix the build configuration (#12)

The actions/setup-java@v2 action requires distribution to be specified.

Author: Danil-Didkovskiy

.github/workflows/publish.yml

@@ -15,6 +15,7 @@ jobs:
       - name: Set up JDK
         uses: actions/setup-java@v2
         with:
+          distribution: 'adopt'
           java-version: 8
 
       - name: Run Gradle tasks