chore(deps): update devdependency jimp to ^0.12.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
jimp	devDependencies	minor	^0.11.0 -> ^0.12.0

---

Release Notes

oliver-moran/jimp

### [`v0.12.0`](https://togithub.com/oliver-moran/jimp/blob/master/CHANGELOG.md#v0120-Sun-May-17-2020) [Compare Source](https://togithub.com/oliver-moran/jimp/compare/v0.11.0...v0.12.0) ##### Release Notes _From [#​891](https://togithub.com/oliver-moran/jimp/issues/891)_ This also drops support for node 6.14. * * * ##### 🚀 Enhancement - Remove compiling polyfills into published code [#​891](https://togithub.com/oliver-moran/jimp/pull/891) ([@​danez](https://togithub.com/danez) [@​hipstersmoothie](https://togithub.com/hipstersmoothie)) ##### ⚠️ Pushed to `master` - Fix package.json ([@​hipstersmoothie](https://togithub.com/hipstersmoothie)) - Add readme description ([@​hipstersmoothie](https://togithub.com/hipstersmoothie)) ##### Authors: 2 - Andrew Lisowski ([@​hipstersmoothie](https://togithub.com/hipstersmoothie)) - Daniel Tschinder ([@​danez](https://togithub.com/danez)) * * *

---

Renovate configuration

:date: Schedule: At any time (no schedule defined).

:vertical_traffic_light: Automerge: Enabled.

:recycle: Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

:no_bell: Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR has been generated by WhiteSource Renovate. View repository job log here.