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

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https://hg.mozilla.org/integration/gaia-central/rev/c3ffa219d18a
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: Merge pull request #10587 from jonallengriffin/disablecal

Bug 868653 - Disable modify_event_test.js in TBPL for perma-orange, r=md...

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https://hg.mozilla.org/integration/gaia-central/rev/0e86cbcd375b
Author: Jonathan Griffin <jgriffin@mozilla.com>
Desc: foo2