chore(deps): bump elasticsearch-dsl from 2.2.0 to 8.15.4

Bumps [elasticsearch-dsl](https://github.com/elasticsearch/elasticsearch-dsl-py) from 2.2.0 to 8.15.4.
- [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@2.2.0...v8.15.4)

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

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

requirements.txt

@@ -5,7 +5,7 @@ bleach[css]==6.1.0
 colander==2.0
 dogpile.cache==1.3.3
 elasticsearch==2.4.1
-elasticsearch_dsl==2.2.0
+elasticsearch_dsl==8.15.4
 geoalchemy2==0.4.2
 geojson==3.1.0
 geomet==1.1.0