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

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https://hg.mozilla.org/integration/gaia-central/rev/cdd2212d8020
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #13452 from mcav/pop3

 Bug 832924 - [Email] Support POP3 accounts. r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/143d910224a9
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 832924 - [Email] Support POP3 accounts. r=asuth