Update dependency @kellyselden/ember-blueprint to v1.2.0

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
@kellyselden/ember-blueprint	devDependencies	minor	1.1.2 -> 1.2.0

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Release Notes

kellyselden/ember-blueprint

### [`v1.2.0`](https://togithub.com/kellyselden/ember-blueprint/compare/v1.1.2...v1.2.0) [Compare Source](https://togithub.com/kellyselden/ember-blueprint/compare/v1.1.2...v1.2.0)

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