Bumping gaia.json for 2 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/1294f3868127
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #12570 from EverythingMe/921092-app-ordering

Bug 921092 - [e.me] Reverse order of newly added apps in Collections

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https://hg.mozilla.org/integration/gaia-central/rev/ba5cc7fe750e
Author: Amir Nissim <amirn@everything.me>
Desc: Bug 921092 - [e.me] Reverse order of newly added apps in Collections