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

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https://hg.mozilla.org/integration/gaia-central/rev/dfd960dc93be
Author: punamdahiya <punamdahiya@yahoo.com>
Desc: Merge pull request #26303 from punamdahiya/Bug1100465

Bug1100465-[Gallery][RTL]-Thumbnail list view first two columns missing black line in rtl mode r=wilsonpage

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https://hg.mozilla.org/integration/gaia-central/rev/9dc6d9bfe0ba
Author: Punam Dahiya <punamdahiya@yahoo.com>
Desc: Bug1100465-[Gallery][RTL]-Thumbnail list view first two columns missing black line in rtl mode
Bumping manifests a=b2g-bump