Bumping gaia.json for 3 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/989ef2eacc28
Author: albertopq <albert.pastor@gmail.com>
Desc: Merge pull request #33924 from albertopq/1210301-tray-intermitent

Bug 1210301 - Intermittent utility_tray_gestures r=mhenretty

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https://hg.mozilla.org/integration/gaia-central/rev/9afb990fefa5
Author: albertopq <apastor@mozilla.com>
Desc: Quick tests

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https://hg.mozilla.org/integration/gaia-central/rev/d6f2327ef919
Author: albertopq <apastor@mozilla.com>
Desc: Bug 1210301 - Intermittent utility_tray_gestures

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "8f3065e7a8141864a217904543a30c818debd562", 
+        "git_revision": "3f4307364e61deb1e5a063e4a1c930f46e25c600", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "e2a09a4af34f544f5c9ba46e2f4aaf22cd13f599", 
+    "revision": "989ef2eacc28ed1ae4407093c533d3becaa618f4", 
     "repo_path": "integration/gaia-central"
 }