Bumping gaia.json for 1 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/60e02ae05e7d
Author: b2gautomation <jonallengriffin@gmail.com>
Desc: Update gaia-ui-tests.json; Merge pull request #1357 from bobsilverberg/device_info

Add an app region and test for Settings - Device Info