Bumping gaia.json for 2 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/98058fb567e5
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #21108 from vingtetun/bug1027633

Bug 1027633 - Overscrolling the music list compresses towards the left e...

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https://hg.mozilla.org/integration/gaia-central/rev/c24e0c3d0776
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1027633 - Overscrolling the music list compresses towards the left edge instead of towards the middle of the list. r=squib
Bumping manifests a=b2g-bump