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

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https://hg.mozilla.org/integration/gaia-central/rev/eab8f4f9ef71
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #24499 from KevinGrandon/bug_1073728_bookmark_icon_race

Bug 1073728 - Reset favicons object after location change

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https://hg.mozilla.org/integration/gaia-central/rev/06275ba36fee
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1073728 - Reset favicons object after location change r=alive r=daleharvey
Bumping manifests a=b2g-bump