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

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https://hg.mozilla.org/integration/gaia-2_1/rev/7132d12fa497
Author: Arthur Chen <crh0716@gmail.com>
Desc: Merge pull request #26271 from crh0716/1099374

Bug 1099374 - Add the target attribute to links r=eragonj

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https://hg.mozilla.org/integration/gaia-2_1/rev/57ba530cede5
Author: Arthur Chen <crh0716@gmail.com>
Desc: Bug 1099374 - Add the target attribute to links
Bumping manifests a=b2g-bump