Bumping gaia.json for 1 gaia-1_3 revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/cbcc936ae71b
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #14591 from daleharvey/946807

Bug 946807 - Dont postResult to activity with no return value r=benfrancis
(cherry picked from commit a14c8ba9fa829cdfa746bda2b88df642daee025a)