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

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https://hg.mozilla.org/integration/gaia-central/rev/a5cce8bf20e8
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #26708 from sudheesh001/Patch_1046900

Bug 1046900 - Adding telugu keyboard to FxOS, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/d641dfb64302
Author: sudheesh001 <sudheesh1995@outlook.com>
Desc: Fixes bug 1046900, Adding telugu keyboard to FxOS, patch prepared by @devendradora
Bumping manifests a=b2g-bump