chore(deps): bump mattermost/mattermost-team-edition from 10.8.0 to 10.9.1 (#9)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docker-compose.yml

@@ -2,7 +2,7 @@ name: chat
 
 services:
   mattermost:
-    image: mattermost/mattermost-team-edition:10.8.0
+    image: mattermost/mattermost-team-edition:10.9.1
     pull_policy: if_not_present
     container_name: chat-web
     restart: unless-stopped