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

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https://hg.mozilla.org/integration/gaia-central/rev/483c00ba2b0e
Author: Cristian Rodriguez <crdlc@tid.es>
Desc: Merge pull request #16509 from crdlc/bug-970225

Bug 970225 - [Download Manager] Confirmation screen is displayed once fo...

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https://hg.mozilla.org/integration/gaia-central/rev/7c6e2620aa11
Author: crdlc <crdlc@tid.es>
Desc: Bug 970225 - [Download Manager] Confirmation screen is displayed once for each selected file

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "e9740002cd5e12afe8a81e1715a8e492a8e97d12", 
+    "revision": "483c00ba2b0e5e6a6c6284be4d5eab44c078c641", 
     "repo_path": "/integration/gaia-central"
 }