chore: release 4.0.1

Author: qqilihq

package.json

@@ -2,7 +2,7 @@
   "name": "ecb-euro-exchange-rates",
   "description": "Retrieve Euro foreign exchange reference rates from the European Central Bank",
   "author": "Philipp Katz <philipp@philippkatz.de>",
-  "version": "4.0.0",
+  "version": "4.0.1",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",
   "license": "MIT",