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

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https://hg.mozilla.org/integration/gaia-central/rev/9476ca7c7e4f
Author: Fischer-L <Fischer-L@users.noreply.github.com>
Desc: Merge pull request #32554 from Fischer-L/ft-presentation-cast-video

Bug 1215004 - [Stingray][fling-player][TV][2.5] (TV side) Should update to the latest Presentation API, r=rexboy

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https://hg.mozilla.org/integration/gaia-central/rev/9659b1515ae2
Author: Fischer.json <foxbrush@Fischerjsons-MacBook-Pro.local>
Desc: Bug 1215004 - [Stingray][fling-player][TV][2.5] (TV side) Should update to the latest Presentation API

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "056c77ac99a3318b9c229970db3f5a581b180c7b", 
+        "git_revision": "c2a42fc2d8b77086075b06f76c2074c0242dc814", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "3d6cbc3e6135beef390d4851ec42b6eb0dc2c8d6", 
+    "revision": "9476ca7c7e4fb12390121e3ba657189399c496cd", 
     "repo_path": "integration/gaia-central"
 }