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

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https://hg.mozilla.org/integration/gaia-central/rev/9371fc7033ea
Author: Gareth Aye <gaye@mozilla.com>
Desc: Merge pull request #30553 from gaye/bug-1172363-package.json-shouldnt-depend-on-jsmarionette-dependencies

Bug 1172363 - gaia/package.json shouldn't depend on jsmarionette dependencies r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/360712189a1a
Author: gaye <gaye@mozilla.com>
Desc: Bug 1172363 - gaia/package.json shouldn't depend on jsmarionette dependencies r=gaye

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "a608787985b31fe13e6bcb67cb5154ec9942b645", 
+        "git_revision": "4a990342342d02cbaa8c9c2eb68894caa39a79aa", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "14f4bb05b4d7c0da55233457043ca5fe192f668b", 
+    "revision": "9371fc7033ea71207288b3d270b84b398c950be7", 
     "repo_path": "integration/gaia-central"
 }