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

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https://hg.mozilla.org/integration/gaia-central/rev/f6ec7e24a354
Author: evanxd <itoyxd@gmail.com>
Desc: Merge pull request #20682 from evanxd/bug-1023807

Bug 1023807 - Mark all dates of duration of an event in month view

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https://hg.mozilla.org/integration/gaia-central/rev/62e3a0af71a5
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1023807 - Add unit/marionette tests

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https://hg.mozilla.org/integration/gaia-central/rev/cad2b780563d
Author: deepak.k.mishra <deepak.k.mishra@accenture.com>
Desc: Bug 1023807 - [B2G][Calendar] Month view: Dot does not appears when event cross couple of days

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "ae5c9147227139014ff4c3093e1a91a1014519b0", 
+    "revision": "f6ec7e24a3549119fe2473d86e48a6459c092c34", 
     "repo_path": "/integration/gaia-central"
 }