JIRA comments are not notified in Mattermost channel

Summary

Mattermost-JIRA plugin does not send notification to Mattermost channel for comments or assignee change.

Steps to reproduce

Create a webhook in JIRA, select the issue updated event for notification and update the webhook URL by adding &updated_comments=1 to the end of the webhook URL

My webhook URL:

https://xx.xxx-xx.xx/plugins/jira/webhook?secret=tj-XXXXXXXXXXXXXXXXg&team=toolbox&channel=jira-test&updated_comments=1

Mattermost details:
Mattermost Version: 5.9.0
Database Schema Version: 5.9.0
Database: postgre

JIRA details:
Jira v7.13.1

Expected behavior

Mattermost channel should be notified when a comment is added or when the assignee is changed.

Observed behavior

JIRA Webhook does not post any notification in the Mattermost channel when a comment is added or when an assignee is changed.

Hi @prajnadnayak, new functionalities for Jira were added in v5.12 release, would you be able to upgrade and see if you still experience the same issues? https://github.com/mattermost/mattermost-plugin-jira#3-jira-v2-roadmap.