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

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https://hg.mozilla.org/integration/gaia-central/rev/5a8ff3d328ac
Author: GaryChen(pychen) <mmm198219@gmail.com>
Desc: Merge pull request #14227 from mpizza/Bug_941567_patch_2

Bug 941567 - [Keyboard][V1.2] The keyboard name of notification bar is incorrect. r=timdream.

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https://hg.mozilla.org/integration/gaia-central/rev/ca04ffe76501
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 941567 - [Keyboard][V1.2] The keyboard name of notification bar is incorrect
     -- since keyboard show timing is depends on 'mozbrowserresize' event,
        so call 'showIMESwitcher' in the end of 'resizeKeyboard'
        to make sure refresh latest information at each time while keyboard layout is chnaged.
     -- ignore mozbrowserresize event while keyboard Frame is hidding.