Merge pull request #4070 from LLK/greenkeeper/scratch-l10n-3.1.20181213173343

Update scratch-l10n to the latest version 

package.json

@@ -104,7 +104,7 @@
     "rimraf": "^2.6.1",
     "scratch-audio": "0.1.0-prerelease.20181023202904",
     "scratch-blocks": "0.1.0-prerelease.1544721188",
-    "scratch-l10n": "3.1.20181213140204",
+    "scratch-l10n": "3.1.20181213173343",
     "scratch-paint": "0.2.0-prerelease.20181212232948",
     "scratch-render": "0.1.0-prerelease.20181212233715",
     "scratch-storage": "1.2.0",