Update to 6.8.18

Author: docker-library-bot

6/Dockerfile

@@ -1,14 +1,14 @@
-# Logstash 6.8.17
+# Logstash 6.8.18
 
 # This image re-bundles the Docker image from the upstream provider, Elastic.
-FROM docker.elastic.co/logstash/logstash:6.8.17@sha256:0211a89e4d972e63e7125f47ab56a9708bb8a4a874cb6dcf0598ffb31d90adb8
+FROM docker.elastic.co/logstash/logstash:6.8.18@sha256:87658263da247f79d4514ad1e022609b850cfd885fde022145a66bd8b34512ba
 # Supported Bashbrew Architectures: amd64
 
 # The upstream image was built by:
-#   https://github.com/elastic/dockerfiles/tree/v6.8.17/logstash
+#   https://github.com/elastic/dockerfiles/tree/v6.8.18/logstash
 
 # The build can be reproduced locally via:
-#   docker build 'https://github.com/elastic/dockerfiles.git#v6.8.17:logstash'
+#   docker build 'https://github.com/elastic/dockerfiles.git#v6.8.18:logstash'
 
 # For a full list of supported images and tags visit https://www.docker.elastic.co