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

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https://hg.mozilla.org/integration/gaia-central/rev/5d7549090c91
Author: viorelaioia <viorela.ioia@softvision.ro>
Desc: Merge pull request #25770 from chirarobert/bug_1093036

Bug 1093036 - [v2.2] Update locators in email setup tests

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https://hg.mozilla.org/integration/gaia-central/rev/d822c828a089
Author: Robert Chira <robertchira@P5075.(none)>
Desc: Bug 1093036 - [v2.2] Update locators in email setup tests
Bumping manifests a=b2g-bump