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

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https://hg.mozilla.org/integration/gaia-central/rev/054b7aea884b
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #14617 from Rik/move-status-messages-949542

Bug 949542 - Status messages are a bit too high r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/9540dd67f8a7
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 949542 - Status messages are a bit too high

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https://hg.mozilla.org/integration/gaia-central/rev/32a0985c1b98
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Merge pull request #14614 from Rik/call-screen-banner-multiline-946742

Bug 946742 - Message overlapped during multiparty when a call is released r=etienne

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https://hg.mozilla.org/integration/gaia-central/rev/66d405973b78
Author: Anthony Ricaud <anthony@ricaud.me>
Desc: Bug 946742 - Message overlapped during multiparty when a call is released