Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/19b1966f7051
Author: John Hu <johu@mozilla.com>
Desc: Merge pull request #10834 from huchengtw-moz/settings/Bug_890862_wrong_apnSettings_when_carrier_is_unknown

Bug 890862 - Wrong ril.data.apnSettings when carrier is not in apn.json, r=@jaoo, r=@arthur

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https://hg.mozilla.org/integration/gaia-central/rev/67d28bb90d98
Author: John Hu <johu@mozilla.com>
Desc: Bug 890862 - Wrong ril.data.apnSettings when carrier is not in apn.json