build: Upgrade minimum Node.js version to v20

Updates the minimum required Node.js version in `package.json` to v20 to align with current project dependencies and recommended best practices. This ensures compatibility and access to newer features of the Node.js runtime.

Author: ioncakephper

package.json

@@ -92,7 +92,7 @@
     "prettier": "^3.2.5"
   },
   "engines": {
-    "node": ">=18.0.0"
+    "node": ">=20.0.0"
   },
   "overrides": {
     "undici": "5.28.4"