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

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https://hg.mozilla.org/integration/gaia-central/rev/4e1257b8e744
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #33493 from albertopq/1222074-pin-article

Bug 1222074 - Pin an article r=benfrancis

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https://hg.mozilla.org/integration/gaia-central/rev/af4403d8429b
Author: albertopq <albert.pastor@gmail.com>
Desc: Bug 1222074 - Pin an article r=benfrancis

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "56c9fd0d6cf5d049a596d629199416041644777a", 
+        "git_revision": "3f04cb73f41a61f932b8e87474c29d214f6d89a2", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "da15c6e89bf1f1a4ecff9da803881a8c91850420", 
+    "revision": "4e1257b8e7447617fb62e91ff304530881ae3b31", 
     "repo_path": "integration/gaia-central"
 }