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

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https://hg.mozilla.org/integration/gaia-central/rev/824f91896cf5
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #22202 from mnjul/bug_1038502_3_lockscreen_notification_alignment

Bug 1038502 - [VsD Refresh] Lockscreen Visual Refresh > Notifications not to spec > Alignment issue. r=gweng

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https://hg.mozilla.org/integration/gaia-central/rev/9687214e9667
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1038502 - [VsD Refresh] Lockscreen Visual Refresh > Notifications not to spec > Alignment issue
Bumping manifests a=b2g-bump