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

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https://hg.mozilla.org/integration/gaia-central/rev/8cd98f5085bf
Author: Sam Joch <samuel@guiora.com>
Desc: Merge pull request #11535 from pivanov/bug-904027

Bug 904027 - [HD][Music] Video scrubber edges looks slightly fuzzy r=samjoch

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https://hg.mozilla.org/integration/gaia-central/rev/1c94e8e8ba98
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 904027 - [HD][Music] Video scrubber edges looks slightly fuzzy