[CI] Updates STACK_VERSION

Author: picandocodigo

.github/workflows/jruby.yml

@@ -27,7 +27,7 @@ jobs:
         sudo sysctl -w vm.max_map_count=262144
     - uses: elastic/elastic-github-actions/elasticsearch@master
       with:
-        stack-version: 7.x-SNAPSHOT
+        stack-version: 7.17-SNAPSHOT
     - uses: ruby/setup-ruby@v1
       with:
         ruby-version: jruby-9.3