Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/df0d494272cf
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #22286 from xfq/Bug1032024

Bug 1032024 - Fix jshint error for build/preferences.js r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/5ba1fde5e988
Author: Xue Fuqiao <xfq.free@gmail.com>
Desc: Bug 1032024 - Fix jshint error for build/preferences.js

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https://hg.mozilla.org/integration/gaia-central/rev/f658c4443b12
Author: Yuren Ju <yurenju@gmail.com>
Desc: Merge pull request #22236 from xfq/Bug1032000

Bug 1032000 - Fix jshint error for build/config/payment-prefs.js r=@yurenju

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https://hg.mozilla.org/integration/gaia-central/rev/adc2cab8a805
Author: Xue Fuqiao <xfq.free@gmail.com>
Desc: Bug 1032000 - Fix jshint error for build/config/payment-prefs.js
Bumping manifests a=b2g-bump