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

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https://hg.mozilla.org/integration/gaia-central/rev/22675b49c8c1
Author: Fabien Cazenave <fabien@cazenave.cc>
Desc: Merge pull request #12026 from etiennesegonzac/bug-901349-span-in-update-manager

Bug 901349 - "<span>" showing in the update manager, r=kaze

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https://hg.mozilla.org/integration/gaia-central/rev/bb74cb658667
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 901349 - "<span>" showing in the update manager