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

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https://hg.mozilla.org/integration/gaia-central/rev/a49e2773b21c
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #25390 from RudyLu/skiee-mahir-master_landing

Bug 1085338 -Fixed, added frequently used punctuation in (.) dot.
r=rudylu

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https://hg.mozilla.org/integration/gaia-central/rev/4b9a3c4f804c
Author: Mahir Labib Chowdhury <optical.mahir@gmail.com>
Desc: Bug 1085338 -Fixed, added frequently used punctuation in (.) dot
longpress.
Bumping manifests a=b2g-bump