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

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https://hg.mozilla.org/integration/gaia-central/rev/344ecc65d805
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #15242 from mpizza/Bug_958003_demo_keyboard

Bug 958003 - resizeWindow() if we receive inputContext before init, r=timdream

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https://hg.mozilla.org/integration/gaia-central/rev/aebe543ef888
Author: mpizza <mmm198219@gmail.com>
Desc: Bug 958003 - [Keyboard][V1.4] FxOS cannot pops up third party keyboard after process manager kills it
    -- after OOM keyboard will not get 'oninputcontextchange' at first time while keyboard app is using
    -- so can not only depens on 'oninputcontextchange' to show keyboard layouts.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "7f07b56e77151839ac4ce7d6fce240610d839ebc", 
+    "revision": "344ecc65d8054acfda161466e62c948f2105bcfe", 
     "repo_path": "/integration/gaia-central"
 }