Update sync-main-doc.yml workflow to Java 17

Author: gsmet

.github/workflows/sync-main-doc.yml

@@ -17,11 +17,11 @@ jobs:
           repository: quarkusio/quarkus
           path: .quarkus-main-repository
 
-      - name: Install JDK 11
+      - name: Install JDK 17
         uses: actions/setup-java@v3
         with:
           distribution: temurin
-          java-version: 11
+          java-version: 17
       - name: Get Date
         id: get-date
         run: |
@@ -41,7 +41,7 @@ jobs:
       - name: Rebase before rsync
         run: |
           git pull origin develop --rebase
- 
+
       - name: Sync guides and generated documentation
         run: |
           .quarkus-main-repository/docs/sync-web-site.sh main ${PWD}