chore(deps): stable ember infrastructure (minor)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-cli (source)	5.4.1 -> 5.5.0
ember-source (source)	5.4.0 -> 5.5.0
eslint-plugin-ember	11.11.1 -> 11.12.0

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Release Notes

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

### [`v5.5.0`](https://togithub.com/ember-cli/ember-cli/blob/HEAD/CHANGELOG.md#v550) [Compare Source](https://togithub.com/ember-cli/ember-cli/compare/v5.4.1...v5.5.0) ##### Blueprint Changes - [`ember new` diff](https://togithub.com/ember-cli/ember-new-output/compare/v5.4.1...v5.5.0) - [`ember addon` diff](https://togithub.com/ember-cli/ember-addon-output/compare/v5.4.1...v5.5.0) ##### Changelog - [#​10332](https://togithub.com/ember-cli/ember-cli/pull/10332) \[ENHANCEMENT] Support converting gts files in blueprint [@​IgnaceMaes](https://togithub.com/IgnaceMaes) - [#​10350](https://togithub.com/ember-cli/ember-cli/pull/10350) \[ENHANCEMENT] Deprecate Travis CI support [@​bertdeblock](https://togithub.com/bertdeblock) - [#​10370](https://togithub.com/ember-cli/ember-cli/pull/10370) When generating a new app with --embroider use all optimisation flags [@​mansona](https://togithub.com/mansona) - [#​10393](https://togithub.com/ember-cli/ember-cli/pull/10393) \[ENHANCEMENT] feat: add skip-install alias to skip-npm [@​IgnaceMaes](https://togithub.com/IgnaceMaes) - [#​10403](https://togithub.com/ember-cli/ember-cli/pull/10403) Fix some docs that were showing up weirdly in generated api docs [@​kategengler](https://togithub.com/kategengler) - [#​9514](https://togithub.com/ember-cli/ember-cli/pull/9514) \[ENHANCEMENT] Use packager commands in `CONTRIBUTING.md` and `README.md` files in `app` and `addon` blueprints [@​elwayman02](https://togithub.com/elwayman02) Thank you to all who took the time to contribute!

emberjs/ember.js (ember-source)

### [`v5.5.0`](https://togithub.com/emberjs/ember.js/blob/HEAD/CHANGELOG.md#v550-December-11-2023) [Compare Source](https://togithub.com/emberjs/ember.js/compare/v5.4.0...v5.5.0) - [#​20575](https://togithub.com/emberjs/ember.js/pull/20575) \[BUGFIX] Update backburner.js to 2.4.2 - [#​20578](https://togithub.com/emberjs/ember.js/pull/20578) \[BUGFIX] Deprecate outlet `TemplateFactory` support - [#​20559](https://togithub.com/emberjs/ember.js/pull/20559) \[INTERNAL] Switch to pnpm

ember-cli/eslint-plugin-ember (eslint-plugin-ember)

### [`v11.12.0`](https://togithub.com/ember-cli/eslint-plugin-ember/compare/v11.11.1...v11.12.0) [Compare Source](https://togithub.com/ember-cli/eslint-plugin-ember/compare/v11.11.1...v11.12.0)

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