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

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https://hg.mozilla.org/integration/gaia-central/rev/b8bf5ba48dd2
Author: Ghislain 'Aus' Lacroix <aus@noiseport.org>
Desc: Merge pull request #21503 from nullaus/bug1035367

bug 1035367 - Update download_ui.js so that it uses data-l10n-id and dat...

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https://hg.mozilla.org/integration/gaia-central/rev/f8d74bfa3286
Author: Ghislain 'Aus' Lacroix <aus@mozilla.com>
Desc: bug 1035367 - Update download_ui.js so that it uses data-l10n-id and data-l10n-args instead of setting textContent directly. r=crdlc

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "2486d605b20a0682ae9b97dba5d118975b4094e4", 
+    "revision": "b8bf5ba48dd2c8736336739f22109492758337e0", 
     "repo_path": "/integration/gaia-central"
 }