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

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https://hg.mozilla.org/integration/gaia-central/rev/14ddf1cf578c
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #20816 from gaye/bug-1027717-volo

Bug 1027717 - Use package manager in calendar r=millermedeiros

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https://hg.mozilla.org/integration/gaia-central/rev/a5d7ad7a9cbd
Author: gaye <gaye@mozilla.com>
Desc: Bug 1027717 - Use package manager in calendar

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "e568fde510714432ffb46ec1a66cda16b978c061", 
+    "revision": "14ddf1cf578c67b0ce7999dffaabbbce3663de7e", 
     "repo_path": "/integration/gaia-central"
 }