Add ember-truth-helpers@4.0.0 release to Ember Times 207

[SergeAstapov]

Ember Times review template

• [ ] Add your name to top and bottom
• [ ] Put emoji in writeup title
• [ ] Add a short blurb (could be the title) to the beginning
• [ ] Link to external article/repo/etc in paragraph/body text, not just the writeup title (link in writeup title is optional now)
• [ ] Add the contributor in the post in format "FirstName LastName (@githubUserName)" linked to their GitHub account
• [ ] Check that all links work

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