chore(deps): pin dependencies

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
@ember/test-helpers	devDependencies	pin	^3.3.0 -> 3.3.1
ember-qunit	devDependencies	pin	^8.1.0 -> 8.1.0
qunit (source)	devDependencies	pin	^2.21.0 -> 2.22.0
qunit-dom	devDependencies	pin	^2.0.0 -> 2.0.0

Add the preset :preserveSemverRanges to your config if you don't want to pin your dependencies.

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