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

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https://hg.mozilla.org/integration/gaia-central/rev/1b7211a77c03
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Merge pull request #21085 from millermedeiros/1030809-day-view-toggle-l10n

Bug 1030809 - [Calendar] Day view: time sidebar doesn't update when changing the locale r=gaye

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https://hg.mozilla.org/integration/gaia-central/rev/312f1a8e1a51
Author: Miller Medeiros <miller@millermedeiros.com>
Desc: Bug 1030809 - [Calendar] Day view: time sidebar doesn't update when changing the locale

b2g/config/gaia.json

@@ -4,6 +4,6 @@
         "remote": "", 
         "branch": ""
     }, 
-    "revision": "6ea4c991f633d95380c489c37b852fe07028fb0a", 
+    "revision": "1b7211a77c0304ac7ac3c10db8b7fbe1a1e2a7a9", 
     "repo_path": "/integration/gaia-central"
 }