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

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https://hg.mozilla.org/integration/gaia-central/rev/8cc2f6347ecb
Author: GaryChen, PYChen, Gary <mmm198219@gmail.com>
Desc: Merge pull request #26729 from mpizza/Bug_1099019_master

Bug 1099019 - [Settings]The notification will cover the tiltle when you ...

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https://hg.mozilla.org/integration/gaia-central/rev/be63b499d0ea
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 1099019 - [Settings]The notification will cover the tiltle when you tap "Terms of Service/Privacy Notice".
Bumping manifests a=b2g-bump