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

========

https://hg.mozilla.org/integration/gaia-central/rev/b4434ed9150a
Author: Rudy Lu <me@rudy.lu>
Desc: Merge pull request #25086 from RudyLu/keyboard/Bug1077757_Add_Galician_keyboard

Bug 1077757 - Galician Dictionary/Autocorrection.
r=timdream.

========

https://hg.mozilla.org/integration/gaia-central/rev/97decd25014a
Author: Rudy Lu <me@rudy.lu>
Desc: Bug 1077757 - Galician Dictionary/Autocorrection.
 - Add Galician layout to host the dictionary.

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "b893c1aff49e0adc55c297f8b79ec21beafe1c1e", 
+    "revision": "b4434ed9150ad518e228d5f74df91872c234d25f", 
     "repo_path": "/integration/gaia-central"
 }