use JVM 21 for releases

Author: ekoby

.github/workflows/publish-release.yml

@@ -19,10 +19,10 @@ jobs:
       - uses: actions/checkout@v4
         with:
           fetch-depth: 0
-      - name: Set up JDK 17
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: 21
           distribution: temurin
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v4