Update dependency ember-source to ~5.12.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
ember-source (source)	~5.9.0 → ~5.12.0

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Release Notes

emberjs/ember.js (ember-source)

v5.12.0

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• #​20746 [BUGFIX] Upgrade glimmer-vm for some perf improvements
• #​20714 [BUGFIX] Break eager cycle for "deprecate" function

v5.11.1

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• #​20734 Circularity fixes

v5.11.0

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• #​20716 [BREAKING] Drop Node 16 support
• #​20704 Remove Component suffix from blueprints to facilitate <template>

v5.10.2

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• #​20726 [BUGFIX] Fix test waiters by removing unintentional duplication from ember-testing bundle
• #​20715 [BUGFIX] Don't publish empty modules

v5.10.1

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• #​20720 [BUGFIX] Fix deprecation guide url for array prototype extensions deprecation

v5.10.0

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• #​20702 [DEPRECATION] Deprecate array prototype extensions per RFC #​848.
• #​20660 [DEPRECATION] Deprecate non-colocated component template resolution per RFC #​995.
• #​20675 [INTERNAL] Build reform
• #​20683 [CLEANUP] Remove application-template-wrapper optional feature support
• #​20685 [CLEANUP] Remove support for non-glimmer template-only components
• #​20681 Update ember-cli-babel

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