Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-2_1/rev/3cfad55a04ce
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #26434 from mikehenrty/bug-1085667-searchtimeout-for-ringtones

Merge pull request #25346 from KevinGrandon/bug_1085667_intermittent_rin...

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https://hg.mozilla.org/integration/gaia-2_1/rev/1a9ac17b0d75
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25346 from KevinGrandon/bug_1085667_intermittent_ringtones_share_test

Bug 1085667 - [Music] Try clicking on share button mutliple times
Conflicts:
	apps/music/test/marionette/lib/music.js

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https://hg.mozilla.org/integration/gaia-2_1/rev/a88a9dd1a4fd
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #26435 from mikehenrty/bug-1097497-wait-for-utility-tray-open-again

Merge pull request #26432 from mikehenrty/bug-1097497-wait-for-utility-t...

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https://hg.mozilla.org/integration/gaia-2_1/rev/41bcbc9fe355
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1097497 - Make sure utility tray is fully opened before closing. r=kgrandon, a=test-only
Bumping manifests a=b2g-bump