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

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https://hg.mozilla.org/integration/gaia-central/rev/ce1789cc91fe
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #25905 from KevinGrandon/bug_1095057_fix_unit_test

Bug 1095057 - Intermittent sharedtest/test/unit/option_menu_test.js | OptionMenu Display style doesn't affect confirm dialogs - done() called multiple times

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https://hg.mozilla.org/integration/gaia-central/rev/cfd80d80a2c6
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Bug 1095057 - Intermittent sharedtest/test/unit/option_menu_test.js | OptionMenu Display style doesn't affect confirm dialogs - done() called multiple times r=kgrandon

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "81652ec33eb529abb3d4175eb6f8b93ddf673d50", 
+    "revision": "ce1789cc91feafe53596cfd0360cd12f7cc69d3b", 
     "repo_path": "/integration/gaia-central"
 }