Bumping gaia.json for 1 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-1_3/rev/d1b70d9e57a5
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #17041 from asutherland/email-wait-for-greeting

Bug 977867 - [email/IMAP] wait for server greeting before sending commands to workaround gmail issue. r=mcav a=blocking-b2g=1.3+
Bumping manifests a=b2g-bump