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

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https://hg.mozilla.org/integration/gaia-central/rev/f8e0641e4ece
Author: Aleh Zasypkin <aleh.zasypkin@gmail.com>
Desc: Merge pull request #26360 from azasypkin/bug-1102171-usage-resource-activation

 Bug 1102171 - [Usage][Refactoring] ViewManager.loadPanel should cleanup panels DOM once scripts/links are activated. r=salva

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https://hg.mozilla.org/integration/gaia-central/rev/ddb0772236ad
Author: Aleh Zasypkin <azasypkin@mozilla.com>
Desc: Bug 1102171 - [Usage][Refactoring] ViewManager.loadPanel should cleanup panels DOM once scripts/links are activated. r=salva

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "a950e94f01a4df5f8d683375b6cce6cd06e5a8ab", 
+    "revision": "f8e0641e4ece1a293b611ec9c18b472281b332d9", 
     "repo_path": "integration/gaia-central"
 }