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

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https://hg.mozilla.org/integration/gaia-central/rev/c5fa2dc97777
Author: ochameau <poirot.alex@gmail.com>
Desc: Merge pull request #14537 from ochameau/simulator-1

Bug 948462 - Fix SIMULATOR=1. r=yurenyu

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https://hg.mozilla.org/integration/gaia-central/rev/dbaf8879327d
Author: Alexandre Poirot <poirot.alex@gmail.com>
Desc: Bug 948462 - Fix SIMULATOR=1. r=yurenyu