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

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https://hg.mozilla.org/integration/gaia-1_3/rev/61b4d59e40c7
Author: James Burke <jrburke@gmail.com>
Desc: Merge pull request #18493 from jrburke/bug969609-v1.3-email-notification-black-screen

Bug 969609 - [B2G][Email]Opening an email notification then pressing back in the email app leads to a black screen. r=asuth a=bajaj

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https://hg.mozilla.org/integration/gaia-1_3/rev/22ed05004314
Author: jrburke <jrburke@gmail.com>
Desc: Bug 969609 - [B2G][Email]Opening an email notification then pressing back in the email app leads to a black screen.

Manual v1.3 branch merge from master commit 2a439c1dd68b9336b7b0ff14df9b742943aa61bf
Bumping manifests a=b2g-bump