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

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https://hg.mozilla.org/integration/gaia-central/rev/11a98560b96d
Author: Douglas Sherk <github@sherk.me>
Desc: Merge pull request #20256 from DouglasSherk/1019546-dialer-contacts-overlap

Bug 1019546 - [Visual Refresh][Dialer] Fix dial pad and contacts overlapping when being switched between. r=rik

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https://hg.mozilla.org/integration/gaia-central/rev/02e8d351063b
Author: DouglasSherk <github@sherk.me>
Desc: Bug 1019546 - [Visual Refresh][Dialer] Fix dial pad and contacts overlapping when being switched between. r=rik

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "7fae58dad153f20aa2613413e96e4442d3895c2d", 
+    "revision": "11a98560b96d49770e25cdde933e92271693c41c", 
     "repo_path": "/integration/gaia-central"
 }