ci: use java17 for release builds

Author: kofemann

.github/workflows/maven-publish.yml

@@ -11,7 +11,7 @@ jobs:
       - name: Set up Maven Central Repository
         uses: actions/setup-java@v5
         with:
-          java-version: '11'
+          java-version: '17'
           distribution: 'temurin'
           server-id: central
           server-username: MAVEN_USERNAME