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

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https://hg.mozilla.org/integration/gaia-central/rev/13a930f98a1e
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Merge pull request #14485 from EverythingMe/946724-collections-unsupported-locale

Bug 946724 - [e.me] Collection suggestions for unsupported languages should show English suggestions [r=ranbena]

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https://hg.mozilla.org/integration/gaia-central/rev/a962f72ded11
Author: Amir Nissim <amirnissim@gmail.com>
Desc: Bug 946724 - [e.me] Collection suggestions for unsupported languages should show English suggestions [r=ranbena]