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

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https://hg.mozilla.org/integration/gaia-central/rev/d183c322e945
Author: Arnau <arnau@arnaumarch.com>
Desc: Merge pull request #25050 from rnowm/1081509

Bug 1081509 - [BB] update modals to the latest visual design r=pivanov

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https://hg.mozilla.org/integration/gaia-central/rev/ea58758ada2b
Author: rnowm <arnau@arnaumarch.com>
Desc: Bug 1081509 - [BB] update modals to the latest visual design

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https://hg.mozilla.org/integration/gaia-central/rev/9560210b500d
Author: Yura Zenevich <yura.zenevich@gmail.com>
Desc: Merge pull request #24851 from mvanderh/master

Bug 1069599 - fixed role and aria-level attributes for subheaders.

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https://hg.mozilla.org/integration/gaia-central/rev/c9222ade625b
Author: Mitchell Van Der Hoeff <mitchell.vanderhoeff@gmail.com>
Desc: Changed all gaia-subheaders in costcontrol to aria-level 2 with role="heading"
Bumping manifests a=b2g-bump