chore(deps): update opensearchproject/opensearch Docker tag to v3.8.0 (#600)

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

Author: renovate[bot]

docker-compose.opensearch.yml

@@ -28,7 +28,7 @@ services:
       timeout: 5s
       retries: 3
   opensearch:
-    image: opensearchproject/opensearch:3.6.0
+    image: opensearchproject/opensearch:3.8.0
     volumes:
       - esdata:/usr/share/opensearch/data
     environment: