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

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https://hg.mozilla.org/integration/gaia-central/rev/c8947b9d62ee
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #12349 from lightsofapollo/skip-calendar-test

Disable calendar create event integration test

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https://hg.mozilla.org/integration/gaia-central/rev/1e1cf4cfcdd5
Author: James Lal <james@lightsofapollo.com>
Desc: Disable calendar create event integration test

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https://hg.mozilla.org/integration/gaia-central/rev/c5a16edb7747
Author: Jim Porter <squibblyflabbetydoo@gmail.com>
Desc: Merge pull request #11847 from jimporter/music-nowplaying-notification

Bug 902974 - [Music] [User Story] Utility tray should display information about the song when music is still playing; r=alive, r=lightsofapollo, r=dkuo, r=djf, ui-r=robmac

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https://hg.mozilla.org/integration/gaia-central/rev/42356a0e37df
Author: Jim Porter <jporter@mozilla.com>
Desc: Bug 902974 - [Music] [User Story] Utility tray should display information about the song when music is still playing