One of my clients has an older Jira installation for a project and since the project is in a ramp-down/maintenance state is not interested in renewing their license which expired some time ago (around version 8.1.1).
Would it be possible to upgrade their Jira to 8.1.3 (the security fix for the latest Jira security advisory) even if this came out after the license expired (but stays within the same minor version) or is there no way to have a secure installation when the license expired?
All documentation only mentions the expiry date as the cut-off date for what versions are allowed but under that model why publish versions like 8.1.3 in the first place if you can upgrade to newer major/minor versions anyway.