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

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https://hg.mozilla.org/integration/gaia-2_1/rev/3b5ea9b1327b
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #25965 from jrburke/bug1095818-v2.1-email-app-startup-notification-order

Bug 1095818 v2.1 - [email] app startup by notification goes to message list instead of message reader r=asuth a=fabrice

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https://hg.mozilla.org/integration/gaia-2_1/rev/56b2355fc515
Author: jrburke <jrburke@gmail.com>
Desc: Bug 1095818 v2.1 - [email] app startup by notification goes to message list instead of message reader
Bumping manifests a=b2g-bump