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

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https://hg.mozilla.org/integration/gaia-central/rev/c23ae06a91db
Author: punamdahiya <punamdahiya@yahoo.com>
Desc: Merge pull request #21580 from punamdahiya/Bug1028359

Bug1028359-[Gallery]-Fix of flickering edit effects image buttons for high resolution images r=djf

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https://hg.mozilla.org/integration/gaia-central/rev/cf6a7400dca4
Author: Punam Dahiya <punamdahiya@yahoo.com>
Desc: Bug1028359-[Gallery]-Fix of flickering edit effects image buttons for high resolution images r=djf
Bumping manifests a=b2g-bump