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

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https://hg.mozilla.org/integration/gaia-central/rev/0a0f9e0fc7d4
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Merge pull request #25943 from eeejay/bug-1069597

Bug 1069597 - Make overlay and dialog views exclusively visible. r=sava f=mai

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https://hg.mozilla.org/integration/gaia-central/rev/391ffb9d9b01
Author: Eitan Isaacson <eitan@monotonous.org>
Desc: Bug 1069597 - Make overlay and dialog views exclusively visible.
Bumping manifests a=b2g-bump