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

========

https://hg.mozilla.org/integration/gaia-central/rev/ae8824910880
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #31219 from nullaus/bug1190317

Bug 1190317 - Update gaia-taskenv docker image to GTK3+. r=me

========

https://hg.mozilla.org/integration/gaia-central/rev/c3abccdce119
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: Bug 1190317 - Update gaia-taskenv docker image to GTK3+. r=me

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "aad6b20df1ca149d0b5243ad5154eec89703845a", 
+        "git_revision": "5774ae876be648b8fb19e69c09d6784a4482a59e", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "51616e2770c8082af1ac3999ce074dd7a0d8b79b", 
+    "revision": "ae8824910880b75425a201498ac09983ea28bb8e", 
     "repo_path": "integration/gaia-central"
 }