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

========

https://hg.mozilla.org/integration/gaia-central/rev/ce860e17b01f
Author: Mihai Cîrlănaru <mihai@cirlanaru.com>
Desc: Merge pull request #16232 from mihai/bug_968081

Bug 968081 - [Settings][L10n] Localize WiFi hotspot security type info...

========

https://hg.mozilla.org/integration/gaia-central/rev/42880082acb9
Author: Mihai Cirlanaru <mihai@cirlanaru.com>
Desc: Bug 968081 - [Settings][L10n] Localize WiFi hotspot security type info on setting changes. r=arthurcc
Bumping manifests a=b2g-bump