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

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https://hg.mozilla.org/integration/gaia-central/rev/113c3beb31f9
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #17391 from cctuan/968693

Bug 968693 - [settings] add marionette test for App permissions panel

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https://hg.mozilla.org/integration/gaia-central/rev/dfb7431f605d
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 968693 - [settings] add marionette test for App permissions panel
Bumping manifests a=b2g-bump