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

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https://hg.mozilla.org/integration/gaia-central/rev/3fe146a1004f
Author: Dominic Kuo <dkuo@mozilla.com>
Desc: Merge pull request #12257 from punamdahiya/Bug915461

Bug 915461 - [Music] - Fix of Tapping x in music search bar does not clear text in search bar, r=@dominickuo

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https://hg.mozilla.org/integration/gaia-central/rev/1130698fb40d
Author: Punam Dahiya <punamdahiya@yahoo.com>
Desc: Bug 915461 - [Music] - Fix of Tapping x in music search bar does not clear text in search bar r=dkuo