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

========

https://hg.mozilla.org/integration/gaia-central/rev/3607c9c57bb0
Author: viorelaioia <viorelaioia@gmail.com>
Desc: Merge pull request #20686 from bebef1987/sim_contacts

Bug 1025940 - Update self.data_layer.sim_contacts to read SDN Contacts

========

https://hg.mozilla.org/integration/gaia-central/rev/2c126db35ac2
Author: Bebe <bebe@mozilla.ro>
Desc: Bug 1025940 - Update self.data_layer.sim_contacts to read SDN Contacts
Bumping manifests a=b2g-bump