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

========

https://hg.mozilla.org/integration/gaia-central/rev/04552334535c
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11914 from davidflanagan/bug905856

Bug 905856: support locked media files r=johu,dkuo,hsivonen,kaze

========

https://hg.mozilla.org/integration/gaia-central/rev/3b857a772d69
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Bug 905856: support for forward locked wallpaper, ringtones and songs