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

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https://hg.mozilla.org/integration/gaia-central/rev/e52913fdf478
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #22916 from KevinGrandon/bug_1053976_fix_eme_search

Bug 1053976 - [B2G][E.me] Searching 'Social' does not display E.me apps r=benfrancis

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https://hg.mozilla.org/integration/gaia-central/rev/6cb00cfbc4bf
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1053976 - [B2G][E.me] Searching 'Social' does not display E.me apps
Bumping manifests a=b2g-bump