Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/034f1852619b
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #12044 from mcjimenez/bug914282

Bug 914282 - Dock icons is not correctly showed

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https://hg.mozilla.org/integration/gaia-central/rev/020e9b52ae22
Author: Carmen Jimenez Cabezas <cjc@tid.es>
Desc: Bug 914282 - Dock icons is not correctly showed

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "c30897e8c63c45806ce94f0d7ea0493222cb114d", 
+    "revision": "034f1852619bf6ddf1619063789070d21b8a66de", 
     "repo_path": "/integration/gaia-central"
 }