Add "Accessibility, performance, use-ability or security improvement" to patch section of [PR template](https://github.com/az-digital/az_quickstart/blob/gitpod-setup/.github/pull_request_template.md). - [ ] Make sure this is congruent with https://github.com/az-digital/az_quickstart/blob/gitpod-setup/RELEASES.md
Add "Accessibility, performance, use-ability or security improvement" to patch section of PR template.