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

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https://hg.mozilla.org/integration/gaia-central/rev/34b6a207b754
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11874 from mahsam/830040-music-bluetooth

Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in mu... r=davidflanagan

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https://hg.mozilla.org/integration/gaia-central/rev/d5726acf804d
Author: mahsam <mahsam.29@gmail.com>
Desc: Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in music app

Bug 830040 - Undiscoverable ui to initiate bluetooth file transfer in music app

Bug 830040 - remove long-press to share songs and some other updates

Bug 830040 - fix the css issue of cover info

830040 - add share icon with 1.5x and 2x res and fix file type for share activity

830040 - update bluetooth icons

830040 - add locked music functionality

830040 - fix spaces at the end of lines