Update main.yml

Author: dsendkowski

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     - name: Set up JDK 1.8
       uses: actions/setup-java@v1
       with:
-        java-version: 1.8
+        java-version: 17
     - name: Build with Gradle
       run: gradle build
     - name: Release assets