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

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https://hg.mozilla.org/integration/gaia-central/rev/72807eee0142
Author: Borja Salguero <borjasalguero@users.noreply.github.com>
Desc: Merge pull request #31164 from borjasalguero/search

Bug 1188904 - [Contacts][NGA] Remove dependency of Search with contac…

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https://hg.mozilla.org/integration/gaia-central/rev/e08a1614db06
Author: borjasalguero <borja.salguero@gmail.com>
Desc: Bug 1188904 - [Contacts][NGA] Remove dependency of Search with contacts.js r=arcturus

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "caba8b26c52d3c771e9ea6fe288acdaf74c7707e", 
+        "git_revision": "67c38af8347f93ddc005a53f427d651b744b55c1", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "95e9562f0290c1c42c6504a1001faa58f3e51e72", 
+    "revision": "72807eee01421a4ddf6180b2e5a66757a42a7984", 
     "repo_path": "integration/gaia-central"
 }