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

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https://hg.mozilla.org/integration/gaia-central/rev/3983226e4b95
Author: EragonJ (E.J.) <eragonj@eragonj.me>
Desc: Merge pull request #24867 from EragonJ/bug-1078128

Bug 1078128 - [Settings] remove try_show_homescreen_section.js and move this logic into root.js

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https://hg.mozilla.org/integration/gaia-central/rev/f3ceb7f4321e
Author: EragonJ <eragonj@eragonj.me>
Desc: Bug 1078128 - [Settings] remove try_show_homescreen_section.js and move this logic into root.js
Bumping manifests a=b2g-bump