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

========

https://hg.mozilla.org/integration/gaia-central/rev/aa3b4c7c4756
Author: Yoshi Huang <allstars.chh@mozilla.com>
Desc: Merge pull request #20180 from kamituel/Bug_1013845_chinese_words_garbled

Bug 1013845: Fix character encoding when sharing contacts via NFC r=mbudzynski

========

https://hg.mozilla.org/integration/gaia-central/rev/10c323769ca5
Author: Kamil Leszczuk <kamituel@gmail.com>
Desc: Bug 1013845: Fix character encoding when sharing contacts via NFC
Bumping manifests a=b2g-bump