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

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https://hg.mozilla.org/integration/gaia-central/rev/af732f0d6362
Author: Alive.Kuo <alegnadise@gmail.com>
Desc: Merge pull request #20340 from alivedise/bugzilla/1022022/orientation-unlock-in-rocketbar

Bug 1022022 - Reset orientation when search window closing, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/ce1896189b36
Author: Alive Kuo <alegnadise@gmail.com>
Desc: Bug 1022022 - Reset orientation when search window closing
Bumping manifests a=b2g-bump