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

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https://hg.mozilla.org/integration/gaia-central/rev/55093d1af8ed
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #22666 from crh0716/1044405

Bug 1044405 - Should set a empty string if there are no text and l10n provided. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/80bd6475bdd1
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1044405 - Should set a empty string if there are no text and l10nid provided
Bumping manifests a=b2g-bump