Setup DNS to use Google DNS and Cloudflare DNS

Instead of using one provided by Anka which will proxy the host one.

Might be related to flutter/flutter#50730

Author: fkorotkov

templates/catalina-base.json

@@ -49,12 +49,6 @@
       ],
       "type": "shell"
     },
-    {
-      "inline": [
-        "sudo safaridriver --enable",
-      ],
-      "type": "shell"
-    },
     {
       "inline": [
         "brew install ruby ruby-build rbenv",
@@ -65,6 +59,13 @@
         "sudo gem install bundler"
       ],
       "type": "shell"
-    }
+    },
+    {
+      "inline": [
+        "sudo safaridriver --enable",
+        "networksetup -setdnsservers Ethernet 8.8.8.8 8.8.4.4 1.1.1.1",
+      ],
+      "type": "shell"
+    },
   ]
 }