Bump version to 4.2.1 (#839)

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "code-push",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "code-push",
-      "version": "4.2.0",
+      "version": "4.2.1",
       "license": "MIT",
       "dependencies": {
         "appcenter-file-upload-client": "0.1.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "code-push",
-  "version": "4.2.0",
+  "version": "4.2.1",
   "description": "Management SDK for the CodePush service",
   "main": "script/index.js",
   "types": "script/index.d.ts",