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

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https://hg.mozilla.org/integration/gaia-central/rev/4de2ce1d55bd
Author: b2gautomation <jonallengriffin@gmail.com>
Desc: Update gaia-ui-tests.json; Merge pull request #1326 from bebef1987/xfail-video

xfail Bug 912957 - Film strip not visible after taking a video