Bumping gaia.json for 2 gaia-central revision(s)
Truncated some number of revisions since the previous bump.

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https://hg.mozilla.org/integration/gaia-central/rev/e528145bb92f
Author: Francisco Borja Salguero Castellano <fbsc@tid.es>
Desc: Merge pull request #10274 from evanxd/bug-879779

Bug 879779 - [MMS] [UX] Message thread. Adjust beggining of content when there's no phone/carrier banner in the layout

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https://hg.mozilla.org/integration/gaia-central/rev/76993248cb75
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 879779 - Set message content below the header with 1.5 rem.