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

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https://hg.mozilla.org/integration/gaia-central/rev/d81b2a73cd82
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #19975 from yzen/bug-1020091

Bug 1020091 - ensuring that the search entry has a correct DOM order wit...

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https://hg.mozilla.org/integration/gaia-central/rev/1dd413a105d7
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1020091 - ensuring that the search entry has a correct DOM order within the e.me app.
Bumping manifests a=b2g-bump