Bump elasticsearch/elasticsearch in /elasticsearch/docker

Bumps [elasticsearch/elasticsearch](https://github.com/elastic/elasticsearch) from 8.15.4 to 8.15.5.
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Changelog](https://github.com/elastic/elasticsearch/blob/main/CHANGELOG.md)
- [Commits](elastic/elasticsearch@v8.15.4...v8.15.5)

---
updated-dependencies:
- dependency-name: elasticsearch/elasticsearch
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

elasticsearch/docker/Dockerfile

@@ -1,5 +1,5 @@
 # Reference image
-FROM docker.elastic.co/elasticsearch/elasticsearch:8.15.4
+FROM docker.elastic.co/elasticsearch/elasticsearch:8.15.5
 
 # Metadata
 LABEL org.opencontainers.image.authors="Daniel Wydler"