Pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
broccoli-asset-rev	devDependencies	pin	^3.0.0 -> 3.0.0
ember-auto-import (source)	devDependencies	pin	^2.7.2 -> 2.7.2
ember-cli (source)	devDependencies	pin	~5.7.0 -> 5.7.0
ember-cli (source)	devDependencies	pin	~5.6.0 -> 5.6.0
ember-cli-dependency-checker	devDependencies	pin	^3.3.2 -> 3.3.2
ember-cli-inject-live-reload	devDependencies	pin	^2.1.0 -> 2.1.0
ember-cli-sri	devDependencies	pin	^2.1.1 -> 2.1.1

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