Update ELK images
elasticsearch:
- https://github.com/docker-library/elasticsearch/commit/38f3a55: Update to 7.10.1
- https://github.com/docker-library/elasticsearch/commit/b6bd4e8: Replace "::set-env" with "$GITHUB_ENV"
- https://github.com/docker-library/elasticsearch/commit/c075da8: Update to 7.10.0
logstash:
- https://github.com/docker-library/logstash/commit/8178ceb: Update to 7.10.1
- https://github.com/docker-library/logstash/commit/5d23272: Replace "::set-env" with "$GITHUB_ENV"
- https://github.com/docker-library/logstash/commit/b680245: Update to 7.10.0
kibana:
- https://github.com/docker-library/kibana/commit/87f688d: Update to 7.10.1
- https://github.com/docker-library/kibana/commit/1ebc7ca: Replace "::set-env" with "$GITHUB_ENV"
- https://github.com/docker-library/kibana/commit/a3a2ee7: Update to 7.10.0