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

========

https://hg.mozilla.org/integration/gaia-1_3/rev/7aa1a3f25c25
Author: Florin Strugariu <bebef_1987@yahoo.com>
Desc: Merge pull request #18213 from viorelaioia/bug_994630_v1.3

 [1.3] [1.4] Fix failure in email tests

========

https://hg.mozilla.org/integration/gaia-1_3/rev/9598324a59fb
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: [1.3] [1.4] Fix failure in email tests
Bumping manifests a=b2g-bump