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

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https://hg.mozilla.org/integration/gaia-central/rev/c2010f29a3d4
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #16934 from 6a68/bug-977776-prefill-reset-password

Bug 977776: Pass email to firefox accounts server when resetting password

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https://hg.mozilla.org/integration/gaia-central/rev/fb0ca0f438b1
Author: Jared Hirsch <ohai@6a68.net>
Desc: Bug 977776: Pass email to firefox accounts server when resetting password.
Bumping manifests a=b2g-bump