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

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https://hg.mozilla.org/integration/gaia-central/rev/3bec5cafb81e
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Merge pull request #19007 from asutherland/email-virt-list-slice-fix

Bug 1004137 - [email] Absolute positioned virtual list regression: Refresh-synced folder not showing newly added message outside date range. r=jrburke. a=1.4+

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https://hg.mozilla.org/integration/gaia-central/rev/bb41f93871ca
Author: Andrew Sutherland <asutherland@asutherland.org>
Desc: Bug 1004137 - [email] Absolute positioned virtual list regression: Refresh-synced folder not showing newly added message outside date range. r=jrburke. a=1.4+

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "e947783a7f562ce030aeba533dc1196d0ffd66cf", 
+    "revision": "3bec5cafb81e317a17dd66c0db321dd5f741263d", 
     "repo_path": "/integration/gaia-central"
 }