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

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https://hg.mozilla.org/integration/gaia-central/rev/f9f206080f0d
Author: Ryan VanderMeulen <ryanvm@gmail.com>
Desc: Merge pull request #31024 from julienw/1082052-smil-promises

Bug 1082052 - [Messages][Refactoring] Return a Promise from SMIL.pars…

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https://hg.mozilla.org/integration/gaia-central/rev/dd89dbff74e8
Author: Julien Wajsberg <felash@gmail.com>
Desc: Bug 1082052 - [Messages][Refactoring] Return a Promise from SMIL.parse r=azasypkin

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "c9384533b05a2af8fcb295bc0f488ef9c290f9a5", 
+        "git_revision": "2f059a213fe84f114fc693b8e90b28c452dec5cb", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "3f963197ceb8c6f98c846df8cc4274756bef1733", 
+    "revision": "f9f206080f0dadf8b17d08e2911bbd037f1fc903", 
     "repo_path": "integration/gaia-central"
 }