chore: bump version to 4.2.0

package.json

@@ -1,6 +1,6 @@
 {
   "name": "weflow",
-  "version": "2.1.0",
+  "version": "4.2.0",
   "description": "WeFlow",
   "main": "dist-electron/main.js",
   "author": {
@@ -178,4 +178,4 @@
     ],
     "icon": "resources/icon.icns"
   }
-}
+}