Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/1387b647a9f5
Author: Dave Hunt <dave.hunt@gmail.com>
Desc: Bug 1030687 - Bump gaiatest-v1.3 version to 0.2. r=zcampbell
Bumping manifests a=b2g-bump