Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/c9f00ec7a9b5
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #11064 from jrburke/bug892069-email-startup-trigger

Bug 892069 [email] Optimize startup based on app trigger r=asuth

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https://hg.mozilla.org/integration/gaia-central/rev/f6dcf5456b0d
Author: jrburke <jrburke@gmail.com>
Desc: Bug 892069 [email] Optimize startup based on app trigger