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

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https://hg.mozilla.org/integration/gaia-central/rev/d3ab9f31868b
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #24370 from timdream/lockscreen-slide-unlock

Bug 1062549 - Introduce a slideHide state, allow slide to reset, r=snowmantw

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https://hg.mozilla.org/integration/gaia-central/rev/314457d0c2b0
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1062549 - Introduce a slideHide state, allow slide to reset
Bumping manifests a=b2g-bump