update editor to latest dev commit

[elpoelma]

Overview

This PR updates the editor to the dev commit corresponding with lblod/ember-rdfa-editor#1226.
It fixes a regression regarding the specificity of the general editor margin css rule.

connected issues and PRs:

lblod/ember-rdfa-editor#1226

Setup

None

How to test/reproduce

• Start the app
• Open an agendapoint containing a template comment
  Without this PR
• The margins inside the template comment are not as expected:
  

With this PR

• The margins of the template comment are correct again:
  

Checks PR readiness

• UI: works on smaller screen sizes
• UI: feedback for any loading/error states
• Check cancel/go-back flows
• Check database state correct when deleting/updating (especially regarding relationships)
• changelog
• npm lint
• no new deprecations