build(deps): Bump elasticsearch-dsl from 8.15.4 to 8.16.0

Bumps [elasticsearch-dsl](https://github.com/elasticsearch/elasticsearch-dsl-py) from 8.15.4 to 8.16.0.
- [Release notes](https://github.com/elasticsearch/elasticsearch-dsl-py/releases)
- [Changelog](https://github.com/elastic/elasticsearch-dsl-py/blob/main/Changelog.rst)
- [Commits](elastic/elasticsearch-dsl-py@v8.15.4...v8.16.0)

---
updated-dependencies:
- dependency-name: elasticsearch-dsl
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

requirements.txt

@@ -7,7 +7,7 @@ dj-database-url==2.3.0
 django-redis==5.4.0
 elastic-apm==6.23.0
 elasticsearch==8.15.1
-elasticsearch-dsl==8.15.4
+elasticsearch-dsl==8.16.0
 elastic-transport==8.15.1
 gunicorn==23.0.0
 honcho==1.1.0