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

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https://hg.mozilla.org/integration/gaia-central/rev/8e8b501116a8
Author: Johan Lorenzo <jlorenzo@mozilla.com>
Desc: Merge pull request #31042 from mermi/newLogoutBzlite

Bug 1183160 - [Bugzilla Lite] Testing the Log out to Bugzilla Lite

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https://hg.mozilla.org/integration/gaia-central/rev/557caef61e8b
Author: mermi <manel.rhaiem92@gmail.com>
Desc: Testing log out bugzilla lite

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "03be7d8918bed58c92a40bba211bbbc97a0e516a", 
+        "git_revision": "756428614f1c10d4687b654c372174c768f75f1b", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "b2fce41f759c1fe9352891f1c8ce03ccf9171d6b", 
+    "revision": "8e8b501116a8abeac3c55673169224883fb14f64", 
     "repo_path": "integration/gaia-central"
 }