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

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https://hg.mozilla.org/integration/gaia-central/rev/25075a5247d0
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23885 from KevinGrandon/bug_1063694_search_unresponsive

Bug 1063694 - [System] Fix SearchWindow prototype

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https://hg.mozilla.org/integration/gaia-central/rev/eb3e18decd96
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1063694 - [System] Fix SearchWindow prototype r=alive
Bumping manifests a=b2g-bump