[docker] Update docker.elastic.co/elasticsearch/elasticsearch Docker tag to v8.18.4 (#51)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

docker-compose.yml

@@ -47,7 +47,7 @@ services:
       timeout: 5s
       retries: 5
   elasticsearch:
-    image: docker.elastic.co/elasticsearch/elasticsearch:8.18.3
+    image: docker.elastic.co/elasticsearch/elasticsearch:8.18.4
     volumes:
       - esdata:/usr/share/elasticsearch/data
     environment: