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

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https://hg.mozilla.org/integration/gaia-central/rev/df66ddb26b7e
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #23265 from steveck-chung/network-alert-api-work

Bug 1051793 - [CMAS] Plug in real CMAS input to the CMAS application. r=azasypkin

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https://hg.mozilla.org/integration/gaia-central/rev/fb354a814bdc
Author: Steve Chung <schung@mozilla.com>
Desc: Bug 1051793 - [CMAS] Plug in real CMAS input to the CMAS application. r=azasypkin

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https://hg.mozilla.org/integration/gaia-central/rev/1a7b6b78b4e1
Author: Carsten Book <tomcat@mozilla.com>
Desc: Merge pull request #23421 from rocallahan/camera-fixes

Bug 1058417 - Don't give the viewfinder a CSS outline (when focused). r=jdarcangelo

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https://hg.mozilla.org/integration/gaia-central/rev/3594a0b4ec9c
Author: Robert O'Callahan <robert@ocallahan.org>
Desc: Bug 1058417. Don't give the viewfinder a CSS outline (when focused). r=dmarcos

This creates an extra layer and isn't even visible since the outline is outside the visible screen area!
Bumping manifests a=b2g-bump