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

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https://hg.mozilla.org/integration/gaia-central/rev/b282a942aba9
Author: Evan Tseng <itoyxd@gmail.com>
Desc: Merge pull request #30104 from evanxd/bug-1165850

Bug 1165850 - Remove the `_destroyed` event listener in AudioChannelController r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/b9cf0d25eb7f
Author: Evan Xd <itoyxd@gmail.com>
Desc: Bug 1165850 - Remove the `_destroyed` event listener in AudioChannelController

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "1126d8bee559f7cde675df2fcc6c196da9cfeba1", 
+        "git_revision": "fa36669c169d2b401cecd2eda3b6a69e918ce702", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "d61a9645397139d188f61d977b5c677399a35518", 
+    "revision": "b282a942aba95fc70db510a69a6900aa8034fe2a", 
     "repo_path": "integration/gaia-central"
 }