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

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https://hg.mozilla.org/integration/gaia-central/rev/fab29041cf8b
Author: Sam Foster <sam@sam-i-am.com>
Desc: Merge pull request #31324 from sfoster/ftu-perf-markers-bug-1193369

Bug 1193369 - Add performance marks for default ftu load/init. r=fcampo

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https://hg.mozilla.org/integration/gaia-central/rev/38bdf33ac847
Author: Sam Foster <sfoster@mozilla.com>
Desc: Bug 1193369 - Add performance marks for default ftu load/init. r=fcampo

========

https://hg.mozilla.org/integration/gaia-central/rev/5def1fafa6d9
Author: Hubert Figuière <hub@figuiere.net>
Desc: Merge pull request #31333 from hfiguiere/bug1193819-music-nga

Bug 1193819 - Temporarily rename the Music NGA app so we can differentiate r=justindarc

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https://hg.mozilla.org/integration/gaia-central/rev/299a0cd0dc4f
Author: Hubert Figuière <hub@figuiere.net>
Desc: Bug 1193819 - Temporarily rename the Music NGA app so we can differentiate.

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "52f3ea58df38e5427f6afeb636bc6ad01d24022f", 
+        "git_revision": "a430fafd76128e476b18c91998ca9c0b44b626f4", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "5c7a65a426564c027d8b9a0f61f247e659fae58d", 
+    "revision": "fab29041cf8bb528f414df1b3d9e8a397c3b5926", 
     "repo_path": "integration/gaia-central"
 }