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

========

https://hg.mozilla.org/integration/gaia-central/rev/e7a7c126f48f
Author: Michael Henretty <michael.henretty@gmail.com>
Desc: Merge pull request #22124 from giovannic/dialog

Dialog

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https://hg.mozilla.org/integration/gaia-central/rev/b05413a6b8ac
Author: Giovanni Charles <giovanni.charles@gmail.com>
Desc: Bug 1043556 - Switch shared custom dialogs from using strings to using l10nIds r=alive r=mhenretty sr=dflanagan

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "b97f6609ff3adfb30e7530f932e6ceae93c5b2f1", 
+    "revision": "e7a7c126f48f4ea3bded1f2e9ee5e4f79ae1be9e", 
     "repo_path": "/integration/gaia-central"
 }