Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/07c955e436d6
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25857 from KevinGrandon/bug_1089528_statusbar_closing

Bug 1089528 - Do not open app until utility tray is pulled down

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https://hg.mozilla.org/integration/gaia-2_1/rev/c8a7316b08b7
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1089528 - Do not open app until utility tray is pulled down r=Cwiiis

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https://hg.mozilla.org/integration/gaia-2_1/rev/0ed17c534862
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25921 from mancas/bug1089010_v2.1

Bug 1089010 - Can open utility tray and settings app while SIM PIN dialo...

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https://hg.mozilla.org/integration/gaia-2_1/rev/19ec2aee9e99
Author: mancas <manuel.casasbarrado@telefonica.com>
Desc: Bug 1089010 - Can open utility tray and settings app while SIM PIN dialog is open. Patch v2.1. r=etienne
Bumping manifests a=b2g-bump