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

========

https://hg.mozilla.org/integration/gaia-central/rev/91945bbce2f9
Author: Rex KM Lee <rexboy@mozilla.com>
Desc: Merge pull request #27410 from rexboy7/1111471-deck-group

Bug 1111471 - [Stingray][Home] Pin new cards at the bottom of deck group. r=dwi2

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https://hg.mozilla.org/integration/gaia-central/rev/b5f83d130519
Author: Rex Lee <rexboy@mozilla.com>
Desc: Bug 1111471 - [Stingray][Home] Pin new cards at the bottom of deck groups

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "174cc78d38ea52a3ef0a51697e42e7005bcdfef3", 
+        "git_revision": "579e01ad4d6e4177a8f636305ac877835d99f134", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "c8b19bac63dc6dfe335a5dc88c43e18ceb4a366b", 
+    "revision": "91945bbce2f909915fe3edf033215baa4c80e3cd", 
     "repo_path": "integration/gaia-central"
 }