Update dependency ember-cli-htmlbars to v6.3.0

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-cli-htmlbars	6.2.0 -> 6.3.0

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Release Notes

ember-cli/ember-cli-htmlbars (ember-cli-htmlbars)

### [`v6.3.0`](https://togithub.com/ember-cli/ember-cli-htmlbars/blob/HEAD/CHANGELOG.md#v630-2023-08-08) [Compare Source](https://togithub.com/ember-cli/ember-cli-htmlbars/compare/v6.2.0...v6.3.0) ##### :rocket: Enhancement - [#​773](https://togithub.com/ember-cli/ember-cli-htmlbars/pull/773) Adjust error message for re-exported class when it has a co-located template ([@​robinborst95](https://togithub.com/robinborst95)) ##### :bug: Bug Fix - [#​764](https://togithub.com/ember-cli/ember-cli-htmlbars/pull/764) Export non-user-constructible `TemplateFactory` type ([@​chriskrycho](https://togithub.com/chriskrycho)) ##### Committers: 2 - Chris Krycho ([@​chriskrycho](https://togithub.com/chriskrycho)) - Robin Borst ([@​robinborst95](https://togithub.com/robinborst95))

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