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

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https://hg.mozilla.org/integration/gaia-central/rev/1248110d4686
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #31776 from nullaus/bug1188891

Bug 1188891 - Use pypi.pub.build.mozilla.org instead of pypi.python.o…

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https://hg.mozilla.org/integration/gaia-central/rev/ef43cf07ea0a
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: Bug 1188891 - Use pypi.pub.build.mozilla.org instead of pypi.python.org. r=me

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "f1cb3089ee2a77dd779408ca86dbb5e4ed5af0b3", 
+        "git_revision": "6272c9da1e61337e38da0272117deb36d2d70e7b", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "754c41de25dcb48c7b1f18f13900d0212ed7fb07", 
+    "revision": "1248110d4686b8abe9e5320483851de28a416e00", 
     "repo_path": "integration/gaia-central"
 }