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

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https://hg.mozilla.org/integration/gaia-2_0/rev/a3e010a84c52
Author: Min-Zhong "John" Lu <mnjul@users.noreply.github.com>
Desc: Merge pull request #20800 from mnjul/bug_1023329_lockscreen_color_overlay_only_for_wallpaper_picker_v2.0

Bug 1023329 - [VsD Refresh] Lockscreen Visual Refresh > Color overlay with notifications wrong with wallpapers chosen from gallery and camera. r=gweng

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https://hg.mozilla.org/integration/gaia-2_0/rev/00192aa98858
Author: John Lu [:mnjul] <jlu@mozilla.com>
Desc: Bug 1023329 - [VsD Refresh] Lockscreen Visual Refresh > Color overlay with notifications wrong with wallpapers chosen from gallery and camera
Bumping manifests a=b2g-bump