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

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https://hg.mozilla.org/integration/gaia-central/rev/69a000b389f5
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #15225 from KevinGrandon/too_much_sparkle

Revert "+ ‘.sparkleshare’"

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https://hg.mozilla.org/integration/gaia-central/rev/a19f28d773d7
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Revert "+ ‘.sparkleshare’"

This reverts commit 5b5ce63b8b2a5553ce5b61ee98502ae5215d3471.