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

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https://hg.mozilla.org/integration/gaia-central/rev/2cac0bf2c35b
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #23923 from mikehenrty/bug-1065421-clock

Bug 1065421 - Add theme color to clock

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https://hg.mozilla.org/integration/gaia-central/rev/23f80fc2a46e
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Bug 1065421 - Add theme color to clock

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "6de4482df209c9778c1103f7c7704aea58845e45", 
+    "revision": "2cac0bf2c35b0a692a7b54502063e69fae4fe57a", 
     "repo_path": "/integration/gaia-central"
 }