Bump version to 4.3.0 and add prepublishOnly script

Updated the package version to 4.3.0 and added a prepublishOnly script to ensure the build process runs before publishing.

Author: Hargne

package.json

@@ -1,6 +1,6 @@
 {
   "name": "jest-html-reporter",
-  "version": "4.2.0",
+  "version": "4.3.0",
   "description": "Jest test results processor for generating a summary in HTML",
   "main": "dist/index.js",
   "unpkg": "dist/index.js",
@@ -15,7 +15,8 @@
     "test": "npm run lint && npm run jest",
     "test:watch": "npm run jest -- --watch --no-coverage",
     "bundle": "rollup -c",
-    "build": "npm run test && npm run bundle"
+    "build": "npm run test && npm run bundle",
+    "prepublishOnly": "npm run build"
   },
   "repository": {
     "type": "git",