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

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https://hg.mozilla.org/integration/gaia-central/rev/242cd5f4f175
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #23227 from KevinGrandon/benfrancis-1056776

Bug 1056776 - Show the end of the URL when Rocketbar is focused

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https://hg.mozilla.org/integration/gaia-central/rev/0f9944046477
Author: Ben Francis <ben@tola.me.uk>
Desc: Bug 1056776 - Show the end of the URL when Rocketbar is focused r=kgrandon
Bumping manifests a=b2g-bump