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

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https://hg.mozilla.org/integration/gaia-central/rev/c0d86bd82a03
Author: Eli Perelman <eli@eliperelman.com>
Desc: Merge pull request #26918 from eliperelman/bug-1088131

Bug 1088131 - Adding new raptor performance tests

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https://hg.mozilla.org/integration/gaia-central/rev/3f3edf2b503a
Author: Eli Perelman <eli@eliperelman.com>
Desc: Bug 1088131 - Adding new raptor performance tests
Bumping manifests a=b2g-bump