Bumping gaia.json for 1 gaia-central revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/60fb11eecd6d
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Revert "Bug 918582 - [B2G] [Buri] [Contacts] User sees no response when tapping contact phone number with no SIM in the device"

This reverts commit 790ced33e463060862170c93e29d826619828a2d.