chore(deps): update peter-evans/create-pull-request action to v8

This PR contains the following updates: | Package | Type | Update | Change | |---|---|---|---| | [peter-evans/create-pull-request](https://redirect.github.com/peter-evans/create-pull-request) | action | major | `v7` -> `v8` | --- ### Release Notes <details> <summary>peter-evans/create-pull-request (peter-evans/create-pull-request)</summary> ### [`v8`](https://redirect.github.com/peter-evans/create-pull-request/compare/v7...v8) [Compare Source](https://redirect.github.com/peter-evans/create-pull-request/compare/v7...v8) </details> --- ### Configuration 📅 **Schedule**: Branch creation - "after 9pm on sunday" (UTC), Automerge - At any time (no schedule defined). 🚦 **Automerge**: Enabled. ♻ **Rebasing**: Whenever PR is behind base branch, or you tick the rebase/retry checkbox. 🔕 **Ignore**: Close this PR and you won't be reminded about this update again. --- - [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check this box --- This PR was generated by [Mend Renovate](https://mend.io/renovate/). View the [repository job log](https://developer.mend.io/github/adopted-ember-addons/ember-sortable). <!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiI0Mi40Mi4yIiwidXBkYXRlZEluVmVyIjoiNDIuNDIuMiIsInRhcmdldEJyYW5jaCI6Im1hc3RlciIsImxhYmVscyI6WyJkZXBlbmRlbmNpZXMiXX0=-->