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

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https://hg.mozilla.org/integration/gaia-central/rev/c2629cd6ae8b
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #12260 from crh0716/908556

Bug 908556 - Block the pairing request when there is already one r=evelyn

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https://hg.mozilla.org/integration/gaia-central/rev/f70681301151
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 908556 - Block the pairing request when there is already one