ember-cli 3.28.5

Release 3.28.5

on Node.js NPM

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #9730 Add Ember v3.28 LTS to addon blueprint (drop support for Ember v3.20 LTS) @kellyselden
• #9740 update embroider deps in LTS @kellyselden

Thank you to all who took the time to contribute!