Bumping gaia.json for 6 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/ce7512d1e4c4
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #30540 from chenpighead/Bug1173706

Bug 1173706 - Let system bootup and fake app launch use the same marionette client.

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https://hg.mozilla.org/integration/gaia-central/rev/22bd58bae3cc
Author: Jeremy Chen <jichen@mozilla.com>
Desc: Bug 1173706 - Let system bootup and fake app launch use the same marionette client.

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https://hg.mozilla.org/integration/gaia-central/rev/30eaaf9ca680
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #30565 from aosmond/bug1166619

Bug 1166619 - Prevent capture when battery status is shutdown, even from hardware buttons.

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https://hg.mozilla.org/integration/gaia-central/rev/823e05a04c96
Author: Andrew Osmond <aosmond@mozilla.com>
Desc: Bug 1166619 - Prevent capture when battery status is shutdown, even from hardware buttons.

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https://hg.mozilla.org/integration/gaia-central/rev/fad462d07fc4
Author: Borja Salguero <borjasalguero@users.noreply.github.com>
Desc: Merge pull request #30541 from borjasalguero/bug_1173278

Bug 1173278 - [Contacts][NGA] 'extServices' should not be tied to 'co…

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https://hg.mozilla.org/integration/gaia-central/rev/cdaba8b62d8b
Author: borjasalguero <fbsc@tid.es>
Desc: Bug 1173278 - [Contacts][NGA] 'extServices' should not be tied to 'contact.js' r=arcturus

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "7a068be308f6b6429b2af79bac89a982e6c18d49", 
+        "git_revision": "0a19986e8b8fead59c5316e13032530097e5026d", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "ff5f46e8f0b309f7400d22305da40449933b0512", 
+    "revision": "ce7512d1e4c4fbf36d5314a5dc10166bc76493f4", 
     "repo_path": "integration/gaia-central"
 }