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

========

https://hg.mozilla.org/integration/gaia-central/rev/1075fe0b40a1
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+

========

https://hg.mozilla.org/integration/gaia-central/rev/a1d191223f3d
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 977867 - [email/IMAP] wait for server greeting before sending commands to workaround gmail issue. r=mcav

land https://github.com/mozilla-b2g/gaia-email-libs-and-more/pull/291
Bumping manifests a=b2g-bump