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

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https://hg.mozilla.org/integration/gaia-central/rev/34ba9b2448cd
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #12700 from crdlc/bug-923697

Bug 923697 - [B2G][Everything.me] There is not a character count limit on collection names

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https://hg.mozilla.org/integration/gaia-central/rev/3e80f9cc44f2
Author: crdlc <crdlc@tid.es>
Desc: Bug 923697 - [B2G][Everything.me] There is not a character count limit on collection names