Bug 1604415 - Add Sicilian (scn) to Firefox Nightly Builds r=Pike,Standard8

Differential Revision: https://phabricator.services.mozilla.com/D57433

--HG--
extra : moz-landing-system : lando

browser/components/search/extensions/list.json

@@ -839,6 +839,13 @@
         "searchDefault": "Яндекс"
       }
     },
+    "scn": {
+      "default": {
+        "visibleDefaultEngines": [
+          "google-b-d", "ddg", "wikipedia"
+        ]
+      }
+    },
     "si": {
       "default": {
         "visibleDefaultEngines": [

browser/locales/all-locales

@@ -78,6 +78,7 @@ pt-PT
 rm
 ro
 ru
+scn
 si
 sk
 sl

browser/locales/l10n.toml

@@ -85,6 +85,7 @@ locales = [
     "rm",
     "ro",
     "ru",
+    "scn",
     "si",
     "sk",
     "sl",