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

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https://hg.mozilla.org/integration/gaia-central/rev/85f330643c52
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #19436 from yzen/bug-1010746

Bug 1010746 - added accessibility tests to TBPL.

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https://hg.mozilla.org/integration/gaia-central/rev/9479a1ab23d2
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1010746 - added accessibility tests to TBPL.
Bumping manifests a=b2g-bump