Update java version used in the workflow

Co-authored-by: Fabio Niephaus <fabio.niephaus@oracle.com>

Author: dnestoro

.github/workflows/create-scheduled-release.yml

@@ -49,7 +49,7 @@ jobs:
         uses: actions/setup-java@v4
         with:
           distribution: 'graalvm'
-          java-version: '17'
+          java-version: '21'
       - name: "⬆️ Update version"
         run: |
           PREVIOUS_RELEASE_TAG=$(ls -1 .git/refs/tags/ | sort -V | tail -1)