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

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https://hg.mozilla.org/integration/gaia-central/rev/cb5a13bd37e2
Author: Greg Weng <snowmantw@gmail.com>
Desc: Merge pull request #27039 from snowmantw/bug1116091

Bug 1116091 - [Flame][Lockscreen]After reboot, the clock on LockScreen

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https://hg.mozilla.org/integration/gaia-central/rev/7335061923b1
Author: Greg Weng <snowmantw@gmail.com>
Desc: Bug 1116091 - [Flame][Lockscreen]After reboot, the clock on LockScreen
won't update
Bumping manifests a=b2g-bump