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

========

https://hg.mozilla.org/integration/gaia-central/rev/f1f983cfb1e4
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #26646 from nullaus/bug1100842

bug 1100842 - Use solid color for dialog background like all other dialo...

========

https://hg.mozilla.org/integration/gaia-central/rev/3584cdfa49df
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 1100842 - Use solid color for dialog background like all other dialogs. r=djf
Bumping manifests a=b2g-bump