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

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https://hg.mozilla.org/integration/gaia-central/rev/0073e3a93252
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Merge pull request #22943 from dmarcos/bug1050555

Bug 1050555 - [Camera] HDR indicator remains on screen in video mode, ph...

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https://hg.mozilla.org/integration/gaia-central/rev/115c3a4f0e44
Author: Diego Marcos <diego.marcos@gmail.com>
Desc: Bug 1050555 - [Camera] HDR indicator remains on screen in video mode, phone enters unusable state, reboot required

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "e888f7f07710a5a74b4bd5a54c67be83de276028", 
+    "revision": "0073e3a93252bb9a2a370544f0f69862da901c0b", 
     "repo_path": "/integration/gaia-central"
 }