Bump elasticsearch from 7.8.1 to 7.9.0 (#1538)
Bump elasticsearch from 7.8.1 to 7.9.0 (#1538)

Bumps [elasticsearch](https://github.com/elastic/elasticsearch-ruby) from 7.8.1 to 7.9.0.
- [Release notes](https://github.com/elastic/elasticsearch-ruby/releases)
- [Changelog](https://github.com/elastic/elasticsearch-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/elastic/elasticsearch-ruby/compare/v7.8.1...v7.9.0)

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Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
ledermann/docker-rails,ledermann/docker-rails,ledermann/docker-rails,ledermann/docker-rails