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

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https://hg.mozilla.org/integration/gaia-central/rev/336c112c4edf
Author: Ben Francis <ben@tola.me.uk>
Desc: Merge pull request #31025 from albertopq/1168948-pinning-preview-card2

Bug 1168948 - Adding preview card r=benfrancis

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https://hg.mozilla.org/integration/gaia-central/rev/ea84b0a71c21
Author: albertopq <albert.pastor@gmail.com>
Desc: Bug 1168948 - Adding preview card r=benfrancis

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "862f0895f3f5a97200601542d99a152a46385a0b", 
+        "git_revision": "3a14891fb02627fe9a39f11b8dfa6aeca9d9ee91", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "b176b86e412fb3143fa31ced79faa5238d540f93", 
+    "revision": "336c112c4edf6789043867309570837a6b739cf5", 
     "repo_path": "integration/gaia-central"
 }