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

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https://hg.mozilla.org/integration/gaia-central/rev/c123cdbc24cb
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #17344 from mcav/apop

Bug 983167 - [email/POP3] broken node-crypto.js shim causes auth failure...

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https://hg.mozilla.org/integration/gaia-central/rev/fc451944db53
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 983167 - [email/POP3] broken node-crypto.js shim causes auth failure when attempting APOP auth. r=asuth
Bumping manifests a=b2g-bump