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

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https://hg.mozilla.org/integration/gaia-2_0/rev/7650a49fd1f4
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #20828 from jrburke/bug1025727-email-cronsync-failsafe

Bug 1025727 - [email/cronysync] Failsafe abort/window.close after failed cronsync(s) r=mcav

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https://hg.mozilla.org/integration/gaia-2_0/rev/da054ebae83c
Author: Jim Porter <jporter@mozilla.com>
Desc: Merge pull request #21003 from jimporter/email-as-download-body-failure

Bug 1009422 - [email/Activesync/hotmail] Apparent change in server behav...
Bumping manifests a=b2g-bump