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

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https://hg.mozilla.org/integration/gaia-central/rev/cf1846cfb152
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #23049 from jrburke/bug1043533-email-account-settings-style

Bug 1043533 - email UI: account settings styling r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/84cb6e14769a
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1043533 - email UI: account settings styling
Bumping manifests a=b2g-bump