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

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https://hg.mozilla.org/integration/gaia-central/rev/e92e4f29a2e9
Author: Kevin Grandon <kevingrandon@yahoo.com>
Desc: Merge pull request #16144 from desaintmartin/970521

Bug 970521: Fix typo in apps/system/js/bootstrap.js. r=alive

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https://hg.mozilla.org/integration/gaia-central/rev/cf831cc2cf09
Author: Cédric de Saint Martin <cedric.dsm@tiolive.com>
Desc: Bug 970521: Fix typo in apps/system/js/bootstrap.js.

b2g/config/gaia.json

@@ -1,4 +1,4 @@
 {
-    "revision": "e117b6b72606f2dd844749d1c5903bfd547e078c", 
+    "revision": "e92e4f29a2e9f1323bcc0858e471b0837ac07135", 
     "repo_path": "/integration/gaia-central"
 }