Bump elasticsearch.version from 7.14.2 to 7.15.0
Bump elasticsearch.version from 7.14.2 to 7.15.0

Bumps `elasticsearch.version` from 7.14.2 to 7.15.0.

Updates `transport` from 7.14.2 to 7.15.0
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Commits](https://github.com/elastic/elasticsearch/compare/v7.14.2...v7.15.0)

Updates `elasticsearch-rest-client` from 7.14.2 to 7.15.0
- [Release notes](https://github.com/elastic/elasticsearch/releases)
- [Commits](https://github.com/elastic/elasticsearch/compare/v7.14.2...v7.15.0)

---
updated-dependencies:
- dependency-name: org.elasticsearch.client:transport
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.elasticsearch.client:elasticsearch-rest-client
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
dadoonet/elasticsearch-beyonder,dadoonet/elasticsearch-beyonder