Update to 6.8.21

Author: docker-library-bot

6/Dockerfile

@@ -1,14 +1,14 @@
-# Kibana 6.8.20
+# Kibana 6.8.21
 
 # This image re-bundles the Docker image from the upstream provider, Elastic.
-FROM docker.elastic.co/kibana/kibana:6.8.20@sha256:96f43fd5096e7a86e787e1d553de384d7093b32df801145040f2c34b1350a7cf
+FROM docker.elastic.co/kibana/kibana:6.8.21@sha256:3f93f7751e865589ddb66bff0af992d7e51609ba40cc98eed7f02c1a66510966
 # Supported Bashbrew Architectures: amd64
 
 # The upstream image was built by:
-#   https://github.com/elastic/dockerfiles/tree/v6.8.20/kibana
+#   https://github.com/elastic/dockerfiles/tree/v6.8.21/kibana
 
 # The build can be reproduced locally via:
-#   docker build 'https://github.com/elastic/dockerfiles.git#v6.8.20:kibana'
+#   docker build 'https://github.com/elastic/dockerfiles.git#v6.8.21:kibana'
 
 # For a full list of supported images and tags visit https://www.docker.elastic.co