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

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https://hg.mozilla.org/integration/gaia-central/rev/f3944d41b059
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11468 from es92/music2uxUpdate

Music2 UX update

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https://hg.mozilla.org/integration/gaia-central/rev/41f714bd5ebd
Author: Evan Shapiro <evan.a.shapiro@gmail.com>
Desc: music2: ux redesign

Conflicts:
	test_apps/music2/style/css/style.css