Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3e02a62830e2
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #17846 from evanxd/bug-990334

Bug 990334 - [Calendar] Newly perma-red marionette test, marionette/today_test.js

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https://hg.mozilla.org/integration/gaia-central/rev/4de830af5256
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 990334 - Set the correct css selector for the current day item.

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https://hg.mozilla.org/integration/gaia-central/rev/8ecb619a76fa
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Revert "Merge pull request #16183 from mcav/alarm-volume"

This reverts commit bb7e44e428640f15e1c07b0ab89c712e797fb9ea, reversing
changes made to 6274b3645b3d41df4aa5a55398b5d106edf1c528.
Bumping manifests a=b2g-bump