Bump elasticsearch from 5.5.2 to 6.8.17

Bumps [elasticsearch](https://github.com/elastic/elasticsearch) from 5.5.2 to 6.8.17.
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Changelog](https://github.com/elastic/elasticsearch/blob/master/CHANGELOG.md)
- [Commits](https://github.com/elastic/elasticsearch/compare/v5.5.2...v6.8.17)

---
updated-dependencies:
- dependency-name: org.elasticsearch:elasticsearch
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
1 file changed