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

========

https://hg.mozilla.org/integration/gaia-2_1/rev/e15fdc9e0bb8
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Merge pull request #24611 from jmcanterafonseca/delete_phones_ice_v21

Bug 1061420 - [Contacts] Delete all numbers which belong to an ICE conta...

========

https://hg.mozilla.org/integration/gaia-2_1/rev/bf33f9a5f73c
Author: Jose M. Cantera <jmcanterafonseca@gmail.com>
Desc: Bug 1061420 - [Contacts] Delete all numbers which belong to an ICE contact, that ICE should be removed from ICE list
Bumping manifests a=b2g-bump