modify packageManager from yarn 4.1 to 4.3

Author: sdqede

package.json

@@ -41,5 +41,5 @@
     "type": "git",
     "url": "https://github.com/hyperweb-io/create-hyperweb-app"
   },
-  "packageManager": "yarn@4.1.0"
-}
+  "packageManager": "yarn@4.3.0"
+}