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

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https://hg.mozilla.org/integration/gaia-central/rev/4c82568674aa
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #22198 from xfq/jshint-fix

Bug 1031997 - Fix jshint error for build/config/gps-prefs.js r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/2d76183e8bda
Author: Xue Fuqiao <xfq.free@gmail.com>
Desc: Bug 1031997 - Fix jshint error for build/config/gps-prefs.js
Bumping manifests a=b2g-bump