Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/62115b0e70ad
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "Bug 841422 - Move unit tests for shared code out of gallery r=lightsofapollo"

This reverts commit 09411b0bc84f9e5e30e410b1fbb2612872a0f55e.
Bumping manifests a=b2g-bump