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

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https://hg.mozilla.org/integration/gaia-central/rev/fe471b147dad
Author: James Lal <james@lightsofapollo.com>
Desc: Merge pull request #25906 from eliperelman/bug-1067625

Bug 1067625 - Fixing broken profile-test creation which errors first performance test

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https://hg.mozilla.org/integration/gaia-central/rev/5bda8faef639
Author: Eli Perelman <eli@eliperelman.com>
Desc: Bug 1067625 - Fixing broken profile-test creation which errors first performance test
Bumping manifests a=b2g-bump