Add postinstall and postupdate scripts to fetch regions.json

Author: nadeem-cs

package.json

@@ -40,7 +40,9 @@
     "pretest": "rimraf coverage && npm run lint",
     "precommit": "npm run lint",
     "prepush": "npm run test:unit",
-    "husky-check": "npx husky && chmod +x .husky/pre-commit"
+    "husky-check": "npx husky && chmod +x .husky/pre-commit",
+    "postinstall": "curl -s --max-time 30 --fail https://artifacts.contentstack.com/regions.json -o lib/assets/regions.json || echo 'Warning: Failed to download regions.json, using existing file if available'",
+    "postupdate": "curl -s --max-time 30 --fail https://artifacts.contentstack.com/regions.json -o lib/assets/regions.json || echo 'Warning: Failed to download regions.json, using existing file if available'"
   },
   "repository": {
     "type": "git",