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

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https://hg.mozilla.org/integration/gaia-central/rev/caad48c44324
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #15847 from svic/Bug_966009

Bug 966009 - Use NfcManager DOM APIs 'notifyUserAcceptedP2P' ,

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https://hg.mozilla.org/integration/gaia-central/rev/deb3e22cc2c1
Author: Siddartha Pothapragada <Siddartha.Pothapragada@telekom.com>
Desc: Bug 966009 - Use NfcManager DOM APIs 'notifyUserAcceptedP2P' ,
'notifySendFileStatus' instead of dispatching events to nfc dom.
Bumping manifests a=b2g-bump