Hello Tuan Quan,
Task scheduler is meant for Updates, and will update to the next last term supported version. to move to version 8.22 would be a Upgrade. In this documentation at the bottom are instructions for upgrading a Jira server from 8.x.x to 8.22.1: https://confluence.atlassian.com/jirasoftware/jira-software-8-22-x-upgrade-notes-1115657084.html#JiraSoftware8.22.xupgradenotes-upgrade_procedure
Hope this helps. Cheers,
Nico.
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