Update actions.yml

Author: lihaoyi

.github/workflows/actions.yml

@@ -55,7 +55,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: 'temurin'
-          java-version: 8
+          java-version: 11
       - name: Publish to Maven Central
         run: |
           if [[ $(git tag --points-at HEAD) != '' ]]; then