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

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https://hg.mozilla.org/integration/gaia-central/rev/278b776eabce
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #30208 from nullaus/bug1165488

Bug 1165488 - Update gaia-taskenv, npm-cache docker worker images and…

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https://hg.mozilla.org/integration/gaia-central/rev/baa975fb5939
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: Bug 1165488 - Update gaia-taskenv, npm-cache docker worker images and versions. Use local packages. r=gaye,jlal

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "614525097bd3d5b473cd58a8bf4c560f82f0a5b7", 
+        "git_revision": "94c6879191ee66bc12d633557dc2d83a26f7afbc", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "e2a8e7afd14ddbfb2fd4f516196dd7dfb37d66ed", 
+    "revision": "278b776eabceeb21b1a4517b3860e3076d9c6863", 
     "repo_path": "integration/gaia-central"
 }