deps: install latest guidemaker-ember-template to switch to shiki

[IgnaceMaes]

• Upgrades to the latest guidemaker and guidemaker-ember-template version
  • This includes sidebar improvements, switching to Shiki for gjs/gts syntax highlighting, ...
• Also changed the code block langs to gjs where used, to test this.

Preview: https://deploy-preview-1997--ember-guides.netlify.app/release/routing/defining-your-routes/

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[IgnaceMaes]

The breaking change since converting guidemaker and dependencies to a v2 addon is the Ember Data integration.

When switching a version via the dropdown it logs:

TypeError: Cannot read properties of undefined (reading 'queryRecord')

In guidemaker/controllers/version.

@mansona IIRC there were some Ember Data reexport magic in the v1 addon that were changed. Do you have an idea how to proceed here?

[IgnaceMaes]

Upgrading to the latest guidemaker patch fixed this 🎉

Should be ready to go now!

[mansona]