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

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https://hg.mozilla.org/integration/gaia-central/rev/6ea4c991f633
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #22233 from anvk/1024501

1024501: Enable accessibility settings when the screen reader is enabled with quick toggle. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/ee0243ef3ee7
Author: Alexey Novak <alexey.novak.mail@gmail.com>
Desc: 1024501: Enable accessibility settings when the screen reader is enabled with quick toggle. r=alive
Bumping manifests a=b2g-bump