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

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https://hg.mozilla.org/integration/gaia-central/rev/405fd5950898
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #22934 from eeejay/bug-1050381

Bug 1050381 - Support accessibility edge gestures. r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/95adf2f69b1c
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 1050381 - Support accessibility edge gestures.
Bumping manifests a=b2g-bump