Chore: Update to 2.10.36

[popey]

Fixes #248

[popey]

Looks like the bot timed out. I built it locally and it worked, so we may want to merge this:

alan@ziggy:~/Source/snapcrafters/gimp$ snap info ./gimp_2.10.36_amd64.snap
path:       "gimp_2.10.36_amd64.snap"
name:       gimp
summary:    GNU Image Manipulation Program
version:    2.10.36 -
build-date: today at 13:25 GMT
license:    unset
description: |
  Whether you are a graphic designer, photographer, illustrator, or scientist,
  GIMP provides you with sophisticated tools to get your job done. You can
  further enhance your productivity with GIMP thanks to many customization
  options and 3rd party plugins.
commands:
  - gimp

[lucyllewy]

LGTM. Thank you.