chore(deps): update dependency ember-cli to ~5.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
ember-cli (source)	~5.11.0 -> ~5.12.0

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Release Notes

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

v5.12.0

Compare Source

Blueprint Changes

• ember new diff
• ember addon diff

Changelog

• #​10483 Bump @​embroider/* dependencies @​NullVoxPopuli
• #​10486 Bump ember-template-lint @​NullVoxPopuli
• #​10481 Bump ember-cli-app-version @​NullVoxPopuli
• #​10485 Bump eslint-plugin-ember @​NullVoxPopuli
• #​10484 Bump ember-resolver @​NullVoxPopuli
• #​10479 Bump @​typescript-eslint dependencies to latest @​NullVoxPopuli
• #​10482 Bump qunit-dom @​NullVoxPopuli
• #​10480 Bump @​ember/string @​NullVoxPopuli
• #​10499 [ENHANCEMENT] Update testem @​bertdeblock

Thank you to all who took the time to contribute!

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