chore(deps): update dependency @ember/test-helpers to ^2.9.6

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Confidence
@ember/test-helpers	^2.9.3 -> ^2.9.6

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Release Notes

emberjs/ember-test-helpers (@​ember/test-helpers)

v2.9.6: Release 2.9.6

Compare Source

Republish with built assets, as v2.9.5 did not have them.

v2.9.5: Release 2.9.5

Compare Source

:bug: Bug Fix

• #​1542 backport globalThis setupContext (@​void-mAlex)

Committers: 1

• Alex (@​void-mAlex)

v2.9.4: Release 2.9.4

Compare Source

:bug: Bug Fix

• #​1418 (backport) bugfix: handle null and undefined in setProperties (@​chriskrycho)

Committers: 1

• Chris Krycho (@​chriskrycho)

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