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

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https://hg.mozilla.org/integration/gaia-central/rev/dfd8dfc538c9
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Merge pull request #31069 from etiennesegonzac/bug-1183868

Bug 1183868 - Do not turn edge gesture on for homescreen inline actvities. r=albertopq

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https://hg.mozilla.org/integration/gaia-central/rev/a496d9836f5d
Author: Etienne Segonzac <etienne@segonzac.info>
Desc: Bug 1183868 - Do not turn edge gesture on for homescreen inline activities. r=albertopq

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "5c87f4001b599e8e91130641a1ba9b4469d7c425", 
+        "git_revision": "ef8b45ecdddfdd30bd600cb298c9b56dfe6e4c08", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "fbbf43db81376ea2a0ab7c6c0c576153b56a59fb", 
+    "revision": "dfd8dfc538c9cc6e0981f9b4004c800f3868cd0f", 
     "repo_path": "integration/gaia-central"
 }