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

========

https://hg.mozilla.org/integration/gaia-1_4/rev/2ed052846f77
Author: Jan Jongboom <janjongboom@gmail.com>
Desc: Merge pull request #20427 from comoyo/bug1003045-v1.4

Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't. r=arthur.chen

========

https://hg.mozilla.org/integration/gaia-1_4/rev/0c87480d2272
Author: Evelyn Hung <jj.evelyn@gmail.com>
Desc: Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't
formatted as vfat
Bumping manifests a=b2g-bump