Bumping gaia.json for 5 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/2524b9846b88
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Revert "Merge pull request #16746 from mcav/refactor-ringview"

This reverts commit 68744fbaaa188d0232f41b8b15f8737c7b660e23, reversing
changes made to 8b3c0f23c568ec9dfa06f4928bee19153a550334.

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https://hg.mozilla.org/integration/gaia-central/rev/11cce5bd02a5
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Merge pull request #16746 from mcav/refactor-ringview

Bug 977692 - [Clock] Refactor Ring View. r=millermedeiros

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https://hg.mozilla.org/integration/gaia-central/rev/2db0f434df3a
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Miller, Round Two.

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https://hg.mozilla.org/integration/gaia-central/rev/d0c19353d46d
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Miller's feedback, round 1.

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https://hg.mozilla.org/integration/gaia-central/rev/9aaf91331591
Author: Marcus Cavanaugh <m@mcav.com>
Desc: Bug 977692 - [Clock] Refactor Ring View
Bumping manifests a=b2g-bump