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

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https://hg.mozilla.org/integration/gaia-central/rev/9efa8c414023
Author: Guillaume C. Marty <gmarty@users.noreply.github.com>
Desc: Merge pull request #30804 from gmarty/Bug-1179849-Add-a-keyboard-to-input-Welsh

Bug 1179849 - Add a keyboard to input Welsh

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https://hg.mozilla.org/integration/gaia-central/rev/843a4901f1fd
Author: Guillaume Marty <edo999@gmail.com>
Desc: Bug 1179849 - Add a keyboard to input Welsh

b2g/config/gaia.json

@@ -1,9 +1,9 @@
 {
     "git": {
-        "git_revision": "dc6c18c0dea7af3c40bfff86c530fd877d899dc4", 
+        "git_revision": "16b0685be0ada05c84d44e61e105a8104043b275", 
         "remote": "https://git.mozilla.org/releases/gaia.git", 
         "branch": ""
     }, 
-    "revision": "eed37c94d1a7e2581513af12d3bedaa9342dee43", 
+    "revision": "9efa8c414023a3976fe4d6e351c670b3d1397d6e", 
     "repo_path": "integration/gaia-central"
 }