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

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https://hg.mozilla.org/integration/gaia-central/rev/62309a2099d3
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #32777 from gmarty/Bug-1217730-Duplicated-home-screens-shown-as-separate-home-screens

Bug 1217730 - Duplicated home screens shown as separate home screens

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https://hg.mozilla.org/integration/gaia-central/rev/3d199958fb3c
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1217730 - Duplicated home screens shown as separate home screens

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "7607cb7492ca9063da8f2a8719706d68eab5d451", 
+        "git_revision": "75f2236d36cc9f9c02d3596fae3de014007cfd82", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "19e6bdab6d0e9c8f51c6dab1200cbd3a9b26fb19", 
+    "revision": "62309a2099d3eb104b4f0fac2d3970ba3403f0e6", 
     "repo_path": "integration/gaia-central"
 }