Update dependency nyc to v18 (#97)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -45,7 +45,7 @@
     "eslint": "^9.0.0",
     "mega-linter-runner": "^9.0.0",
     "mocha": "^11.0.0",
-    "nyc": "^17.0.0",
+    "nyc": "^18.0.0",
     "which": "^6.0.0"
   },
   "engines": {