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

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https://hg.mozilla.org/integration/gaia-central/rev/bd9164eefee7
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #27785 from autra/bug-1108708

Bug 1108708 - change padding for RTL in import contacts page. r=arcturus

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https://hg.mozilla.org/integration/gaia-central/rev/ae5eed4b73ca
Author: Augustin Trancart <augustin.trancart@phoxygen.com>
Desc: Bug 1108708 - change padding for RTL in import contacts page

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https://hg.mozilla.org/integration/gaia-central/rev/904e9badb51e
Author: ochameau <poirot.alex@gmail.com>
Desc: Merge pull request #27776 from ochameau/browserPackage

Bug 1043953 - Revert useless package.json in apps/browser. r=rickychien

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https://hg.mozilla.org/integration/gaia-central/rev/63ff273f7cde
Author: Alexandre Poirot <poirot.alex@gmail.com>
Desc: Bug 1043953 - Revert useless package.json in apps/browser. r=rickychien

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https://hg.mozilla.org/integration/gaia-central/rev/b23c5418cd3a
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #27704 from azasypkin/bug-1124758-thread-group-header

Bug 1124758 - [Messages] We should not add the hidden (+0) text at the end of the header. r=julien

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https://hg.mozilla.org/integration/gaia-central/rev/158fb2ce5ab5
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1124758 - [Messages] We should not add the hidden (+0) text at the end of the header. r=julien

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "9911a14d072f530ddfb88c540939443d160f8d1d", 
+        "git_revision": "d4f9aee7fdc2212ce69193eac3caee19bd65adcf", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "274c6797f493e0ce1b18f0b345b5787622bb253b", 
+    "revision": "bd9164eefee72c3f1b5e2d04519d6f28215ccbb4", 
     "repo_path": "integration/gaia-central"
 }