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

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https://hg.mozilla.org/integration/gaia-central/rev/d5c180524a00
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #22333 from crh0716/1044166

Bug 1044166 - Should set the wallpaper src when displaying the panel r=eragonj

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https://hg.mozilla.org/integration/gaia-central/rev/b5f94e8cd240
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1044166 - Should set the wallpaper src when displaying the panel
Bumping manifests a=b2g-bump