Use new antora target.

See #2893.

Author: gregturn

.github/workflows/deploy-docs.yml

@@ -36,7 +36,7 @@ jobs:
         echo BUILD_VERSION=$BUILD_VERSION >> $GITHUB_ENV
     - name: Run Antora
       run: |
-        ./mvnw compile
+        ./mvnw antora
     - name: Publish Docs
       uses: spring-io/spring-doc-actions/[email protected]
       with: