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

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https://hg.mozilla.org/integration/gaia-central/rev/2d03beb3590f
Author: Gabriele Svelto <gsvelto@mozilla.com>
Desc: Bug 1092161 - Properly handle MMI short-string codes r=drs

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https://hg.mozilla.org/integration/gaia-central/rev/86a101a8f226
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #25453 from zacc/bug_1086679

Bug 1086679 - Remove all scrollIntoView hacks from gaiatest and tests

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https://hg.mozilla.org/integration/gaia-central/rev/d52632e9fa82
Author: Zac <zcampbell@mozilla.com>
Desc: Bug 1086679 - Remove all scrollIntoView hacks from gaiatest and tests
Bumping manifests a=b2g-bump