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

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https://hg.mozilla.org/integration/gaia-central/rev/27f8c3fc5281
Author: George <georgeiscoming@gmail.com>
Desc: Merge pull request #22959 from cctuan/1050670-2

Bug 1050670 - verify output files from jsmin

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https://hg.mozilla.org/integration/gaia-central/rev/d4a49767a853
Author: cctuan <georgeiscoming@gmail.com>
Desc: Bug 1050670 - verify output files from jsmin
Bumping manifests a=b2g-bump