Update dependency which to v5

Author: renovate[bot]

package-lock.json

@@ -46,7 +46,7 @@
     "mega-linter-runner": "^8.0.0",
     "mocha": "^10.2.0",
     "nyc": "^17.0.0",
-    "which": "^4.0.0"
+    "which": "^5.0.0"
   },
   "engines": {
     "node": ">=18.0.0"