fix(deps): update dependency date-fns to v4

Author: renovate[bot]

package-lock.json

@@ -57,7 +57,7 @@
   "homepage": "https://github.com/toolisticon/ssl-hostinfo-prometheus-exporter",
   "dependencies": {
     "cron": "^3.0.0",
-    "date-fns": "^2.29.3",
+    "date-fns": "^4.0.0",
     "log4bro": "^3.18.0",
     "node-fetch": "^2.6.9",
     "ssl-checker": "^2.0.7"