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

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https://hg.mozilla.org/integration/gaia-central/rev/b7a3705e310f
Author: Johan Lorenzo <jlorenzo@mozilla.com>
Desc: Merge pull request #28361 from davehunt/bug1135651

Bug 1135651 - Sanitise e-mail test variables

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https://hg.mozilla.org/integration/gaia-central/rev/84d239f9c54f
Author: Dave Hunt <dave.hunt@gmail.com>
Desc: Bug 1135651 - Sanitise e-mail test variables. r=jlorenzo

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "00272b56366bf2f6c09420efa858b07eac339158", 
+        "git_revision": "e6e065165145aa0e862cb69e85f23e08ddcc2804", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "322fa0d7f9fd9c0f012f5e16202d6154360f6c35", 
+    "revision": "b7a3705e310f80f3037caa1b993b2e8be30c8a48", 
     "repo_path": "integration/gaia-central"
 }