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

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https://hg.mozilla.org/integration/gaia-central/rev/54fd3bc0f2ed
Author: Florin Strugariu <florin.strugariu@softvision.ro>
Desc: Merge pull request #26773 from viorelaioia/bug_1111519

Bug 1111519 - Update locators in Device info page

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https://hg.mozilla.org/integration/gaia-central/rev/645e3c1eb36f
Author: Viorela Ioia <viorelaioia@gmail.com>
Desc: Bug 1111519 - Update locators in Device info page
Bumping manifests a=b2g-bump