Bumping gaia.json for 8 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/8376bc364bf6
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #26078 from aosmond/bug1093797-v2.1

Bug 1093797 - Clear cached picture size when releasing camera.

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https://hg.mozilla.org/integration/gaia-2_1/rev/6895892fb90b
Author: Andrew Osmond <aosmond@mozilla.com>
Desc: Bug 1093797 - Clear cached picture size when releasing camera.

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https://hg.mozilla.org/integration/gaia-2_1/rev/1d0f439eb92c
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #26152 from gmarty/Bug-1066243-Battery-indicator-not-always-properly-updating-when-charging-disconnecting-v2.1

Bug 1066243 - [Status Bar][Battery] Battery indicator not always properl...

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https://hg.mozilla.org/integration/gaia-2_1/rev/876f68b98df2
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1066243 - [Status Bar][Battery] Battery indicator not always properly updating when charging/disconnecting

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https://hg.mozilla.org/integration/gaia-2_1/rev/74140b45f396
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #25970 from Cwiiis/bug1089621-janky-edge-gestures-2.1

Bug 1089621 - Improve janky edge gestures. r=etienne,eitan

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https://hg.mozilla.org/integration/gaia-2_1/rev/c98ad8b35d5d
Author: Chris Lord <chrislord.net@gmail.com>
Desc: Bug 1089621 - Add will-change: transform during edge-swipe. r=etienne

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https://hg.mozilla.org/integration/gaia-2_1/rev/db55ec032d10
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #26122 from etiennesegonzac/bug-1066607-uplift

Bug 1066607 - Use the BrowserConfigHelper for new tabs to fix the missin...

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https://hg.mozilla.org/integration/gaia-2_1/rev/f7fce9e11981
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1066607 - Use the BrowserConfigHelper for new tabs to fix the missing origin issues.
Bumping manifests a=b2g-bump