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

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https://hg.mozilla.org/integration/gaia-central/rev/d307fbe7da88
Author: You-Sheng Yang <vicamo@gmail.com>
Desc: Merge pull request #22865 from vicamo/bugzilla/878533/MozSmsFilter-webidl

Bug 878533 - replace MozSmsFilter with plain js object. r=schung

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https://hg.mozilla.org/integration/gaia-central/rev/6ca936f864c9
Author: You-Sheng Yang <vicamo@gmail.com>
Desc: Bug 878533 - replace MozSmsFilter with plain js object. r=schung
Bumping manifests a=b2g-bump