[CI] Sets STACK_VERSION to latest, security disabled

Author: picandocodigo

.github/workflows/main.yml

@@ -26,7 +26,8 @@ jobs:
         sudo sysctl -w vm.max_map_count=262144
     - uses: elastic/elastic-github-actions/elasticsearch@master
       with:
-        stack-version: 8.0.0-SNAPSHOT
+        stack-version: 9.0.0-SNAPSHOT
+        security-enabled: false
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: ${{ matrix.ruby }}