Fix website deployment workflow to use plain mvn command

Replace './mvnw' with 'mvn' in deploy-website.yml since mvnw script was removed.
The workflow already sets up Maven with Java 21 and caching, so plain mvn works.

This fixes the website deployment failure and prepares for eventual transition
to './mvx website build' in the future.

Author: gnodet

.github/workflows/deploy-website.yml

@@ -40,7 +40,7 @@ jobs:
         echo "SITE_URL=$SITE_URL" >> $GITHUB_ENV
         echo "SITE_PATH=$SITE_PATH" >> $GITHUB_ENV
         echo "GITHUB_REPOSITORY=$GITHUB_REPOSITORY SITE_DIR=$SITE_DIR SITE_URL=$SITE_URL SITE_PATH=$SITE_PATH"
-        QUARKUS_ROQ_GENERATOR_BATCH=true ./mvnw -f website clean package quarkus:run \
+        QUARKUS_ROQ_GENERATOR_BATCH=true mvn -f website clean package quarkus:run \
             -DskipTests -Pinclude-javadocs \
             -Dquarkus.http.root-path=$SITE_PATH \
             -Dsite.url=$SITE_URL