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

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https://hg.mozilla.org/integration/gaia-2_1/rev/735e16015326
Author: crdlc <crdlc@tid.es>
Desc: Bug 1071632 - [Contacts] [ICE] ICE Group is not properly refreshed after removing all phone numbers of an ICE Contact

Conflicts:
	apps/communications/contacts/test/marionette/ice_test.js
Bumping manifests a=b2g-bump