Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_0/rev/46933677e1e5
Author: Fabrice Desré <fabrice@desre.org>
Desc: Bug 1050423 - Killing an app that has an open permissions dialog leaks the ContentParent r=alive

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https://hg.mozilla.org/integration/gaia-2_0/rev/04ea89a7bd22
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22682 from aniruddha-adhikary/v2.0

Bug 1029934 - User cannot input Rupee symbol (v2.0)

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https://hg.mozilla.org/integration/gaia-2_0/rev/2d8161ead94b
Author: Aniruddha Adhikary <aniruddha@adhikary.net>
Desc: Bug 1029934 - User cannot input Rupee symbol
Bumping manifests a=b2g-bump