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

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https://hg.mozilla.org/integration/gaia-central/rev/198ce093d43e
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Merge pull request #23258 from timdream/keyboard-switch-fail

Bug 1054184 - Don't clear active targets right away, r=rudyl

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https://hg.mozilla.org/integration/gaia-central/rev/e2191e37f5aa
Author: Timothy Guan-tin Chien <timdream@gmail.com>
Desc: Bug 1054184 - Don't clear active targets right away

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "6df2384e694d9ec8b0ea945e7e0c1adb23989526", 
+    "revision": "198ce093d43e19535d5b682334218e80d6889be7", 
     "repo_path": "/integration/gaia-central"
 }