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/ad4c5ec370cf
Author: gitmai <mri@tid.es>
Desc: Merge pull request #14578 from gitmai/bug-948824-CC-remove-icchelper

Bug 948824 - [CostControl] [DSDS] Remove IccHelper
r=salva
(cherry picked from commit 33e4a0f4e242b54c91eb8a1f5f91efada5252565)