chore(deps): update dependency ember-source to v3.28.4

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-source (source)	3.28.2 -> 3.28.4

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Release Notes

emberjs/ember.js

### [`v3.28.4`](https://togithub.com/emberjs/ember.js/releases/v3.28.4) [Compare Source](https://togithub.com/emberjs/ember.js/compare/v3.28.3...v3.28.4) ##### CHANGELOG - [#​19798](https://togithub.com/emberjs/ember.js/pull/19798) More fixes for errors while precompiling inline templates (introduced in 3.28.2) - [glimmerjs/glimmer-vm@0.80.3](https://togithub.com/glimmerjs/glimmer-vm/releases/tag/v0.80.3) Improve template compilation speed regression ### [`v3.28.3`](https://togithub.com/emberjs/ember.js/blob/master/CHANGELOG.md#v3283-October-22-2021) [Compare Source](https://togithub.com/emberjs/ember.js/compare/v3.28.2...v3.28.3) - [#​19799](https://togithub.com/emberjs/ember.js/pull/19799) / [glimmerjs/glimmer-vm#​1354](https://togithub.com/glimmerjs/glimmer-vm/pull/1354) Fixes for errors while precompiling inline templates (introduced in 3.28.2)

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