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

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https://hg.mozilla.org/integration/gaia-2_1/rev/7e58c3b962b1
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Merge pull request #23774 from justindarc/bug1060500-v2.1

Bug 1060500 - [camera]  on startup

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https://hg.mozilla.org/integration/gaia-2_1/rev/f3da43a4f2e2
Author: Justin D'Arcangelo <justindarc@gmail.com>
Desc: Bug 1060500 - [camera]  on startup
Bumping manifests a=b2g-bump