bumped preview app versions

package.json

@@ -1,6 +1,6 @@
 {
     "name": "nativescript-preview-sdk",
-    "version": "0.2.11",
+    "version": "0.2.12",
     "description": "Handles the communication to the NativeScript Preview Apps",
     "main": "src/nativescript-preview-sdk",
     "typings": "src/nativescript-preview-sdk.d.ts",

src/preview-app-versions.js

@@ -1,32 +1,32 @@
 exports.fallbackPreviewVersions = {
 	"staging": {
 		"playground": {
-			"android": 30,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		},
 		"cli": {
-			"android": 30,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		}
 	},
 	"uat": {
 		"playground": {
-			"android": 30,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		},
 		"cli": {
-			"android": 30,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		}
 	},
 	"live": {
 		"playground": {
-			"android": 27,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		},
 		"cli": {
-			"android": 27,
-			"ios": 19
+			"android": 31,
+			"ios": 20
 		}
 	}
 };