Bumping gaia.json for 4 gaia revision(s) a=gaia-bump

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https://hg.mozilla.org/integration/gaia-central/rev/30e2c7de9707
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #22326 from dmarcos/bug1046316

Bug 1046316 - [Camera] Focus view not appended to viewfinder

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https://hg.mozilla.org/integration/gaia-central/rev/8351f9ef4bbd
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 1046316 - [Camera] Focus view not appended to viewfinder

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https://hg.mozilla.org/integration/gaia-central/rev/25ec7352c30b
Author: vingtetun <21@vingtetun.org>
Desc: Merge pull request #22325 from vingtetun/followup-bugsmooth

Bug 1039519 - Implement a smooth transition to show/hide the rocketbar w...

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https://hg.mozilla.org/integration/gaia-central/rev/2de3cce4f8df
Author: Vivien Nicolas <vnicolas@mozilla.com>
Desc: Bug 1039519 - Implement a smooth transition to show/hide the rocketbar when scrolling up/down a page. Followup. r=me

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "18d5dc74bae919576acc7fe213362e4b19f626a1", 
+    "revision": "30e2c7de9707806a94bb29f69697d8638f1b072f", 
     "repo_path": "/integration/gaia-central"
 }