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

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https://hg.mozilla.org/integration/gaia-central/rev/b62d4e94b361
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #16237 from KevinGrandon/bug_972163_eme_search

Bug 972163 - Everything.me search implementation

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https://hg.mozilla.org/integration/gaia-central/rev/841cad4891cf
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 972163 - Everything.me search implementation r=daleharvey
Bumping manifests a=b2g-bump