Bumping gaia.json for 2 gaia-central revision(s)

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https://hg.mozilla.org/integration/gaia-central/rev/1bb5a08dd1a7
Author: David Flanagan <dflanagan@mozilla.com>
Desc: Merge pull request #11572 from gitmai/bug-905946-autocorrect-punctuation

Bug 905946 - keeping the punctuation character when reverting autofixing r=davidflanagan

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https://hg.mozilla.org/integration/gaia-central/rev/43f6ddd0c0bf
Author: mai <mri@tid.es>
Desc: Bug 905946 - keeping the punctuation character when reverting autofixing

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "817c28709daf5647e477847862fe32d17f42ec3d", 
+    "revision": "1bb5a08dd1a7b974168dfd7f03bb1246c592d304", 
     "repo_path": "/integration/gaia-central"
 }