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

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https://hg.mozilla.org/integration/gaia-central/rev/88238897859f
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #16686 from flodolo/bug976663

Bug 976663 - Contact merge: number and email tags are not localized in details of suggested duplicated contact

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https://hg.mozilla.org/integration/gaia-central/rev/d95372fe80c3
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 976663 - Contact merge: number and email tags are not localized in contact detail
Bumping manifests a=b2g-bump