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

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https://hg.mozilla.org/integration/gaia-central/rev/d9b85eafa4e2
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #15368 from KevinGrandon/i_hate_sparkle

Revert "+ ‘.sparkleshare’"

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https://hg.mozilla.org/integration/gaia-central/rev/a5896162ef6c
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "+ ‘.sparkleshare’"

This reverts commit 99abdba055b14359c0207ed1d2e0764895a667b2.