Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/ce7fe4401ff3
Author: Sean Lee <weilonge@gmail.com>
Desc: Merge pull request #32654 from weilonge/seanlee/TVBrowser/master/Bug1217349

Bug 1217349 - Update bookmarks without updating places. r=yifan

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https://hg.mozilla.org/integration/gaia-central/rev/81b60558e052
Author: Sean Lee <selee@mozilla.com>
Desc: Bug 1217349 - Update bookmarks without updating places. r=yifan

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https://hg.mozilla.org/integration/gaia-central/rev/5d4ac5d9e255
Author: steveck-chung <schung@mozilla.com>
Desc: Merge pull request #32458 from steveck-chung/message-performance-improve

Bug 1211395 - Performance regression in Message, r=julienw azasypkin

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https://hg.mozilla.org/integration/gaia-central/rev/9c714d9d52d0
Author: steveck-chung <schung@mozilla.com>
Desc: Bug 1211395 - Performance regression in Message, r=julienw, azasypkin

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "410e91ddabc7ba82a9b43b3711a3fdf2cb8de309", 
+        "git_revision": "2fb7d3e157c1a6a3e2c2e4dd871fe3f0dc66dc20", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "1b985049f337d592c0de868cbe3e34e49ea560bd", 
+    "revision": "ce7fe4401ff33904bffc9ca54599296a60388078", 
     "repo_path": "integration/gaia-central"
 }