Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/3490322d1362
Author: Ryan VanderMeulen <rvandermeulen@mozilla.com>
Desc: Merge pull request #22792 from flodolo/bug1052537

Bug 1052537 - [Settings] Developer HUD toggle follow-up for localizability

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https://hg.mozilla.org/integration/gaia-central/rev/be53d0e100b8
Author: Francesco Lodolo (:flod) <flod@lodolo.net>
Desc: Bug 1052537 - [Settings] Developer HUD toggle fix localizability (wrap text, separate strings)

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https://hg.mozilla.org/integration/gaia-central/rev/e36ce9db094a
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #22788 from yzen/bug-1050838

Bug 1050838 - fixing sytling for global value selector, that is not part...

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https://hg.mozilla.org/integration/gaia-central/rev/f636a4a01947
Author: Yura Zenevich <yzenevich@mozilla.com>
Desc: Bug 1050838 - fixing sytling for global value selector, that is not part of an app.
Bumping manifests a=b2g-bump