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

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https://hg.mozilla.org/integration/gaia-central/rev/36f36185e7c0
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Merge pull request #10005 from pivanov/bug-844575

Bug 844575 - [BB][headers] - skin-organic and skin-dark have visual discrepancies

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https://hg.mozilla.org/integration/gaia-central/rev/2a76a16639af
Author: Pavel Ivanov <pivanov@mozilla.com>
Desc: Bug 844575 - [BB][headers] - skin-organic and skin-dark have visual discrepancies