Sort list of '--version'ed casks.

[ascherer]

See issue Homebrew/homebrew-cask#196331

brew list --cask --version produces an unsorted list of installed casks.

Also, the casks part of brew list --versions is unsorted, while the formulas are (still) sorted.

This regression was introduced by this commit.

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same change?
• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your changes? Here's an example.
• Have you successfully run brew style with your changes locally?
• Have you successfully run brew typecheck with your changes locally?
• Have you successfully run brew tests with your changes locally?

---

[MikeMcQuaid]

Makes sense, thanks @ascherer!

[MikeMcQuaid]

Also: thanks for your first PR @ascherer, you rock!