Bumping gaia.json for 2 gaia-central revision(s)

========

https://hg.mozilla.org/integration/gaia-central/rev/8d8787f3637d
Author: Francisco Borja Salguero Castellano <fbsc@tid.es>
Desc: Merge pull request #10442 from fcampo/mms-photo

Bug 882593 - [MMS] Multirecipient. Contact's picture is not shown when the group participant info is displayed

========

https://hg.mozilla.org/integration/gaia-central/rev/97e0ddef956d
Author: Fernando Campo <fernando.campo@o2.com>
Desc: Bug 882593 - [MMS] Multirecipient. Contact's picture is not shown when the group participant info is displayed