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

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https://hg.mozilla.org/integration/gaia-central/rev/97587283bb1f
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #25817 from eeejay/bug-1093801

Bug 1093801 - Make gaia-checkbox accessible. r=kgrandon

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https://hg.mozilla.org/integration/gaia-central/rev/c463130084fb
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 1093801 - Make gaia-checkbox accessible.
Bumping manifests a=b2g-bump