chore(deps): update dependency @types/node to v15.14.9

Author: renovate[bot]

package-lock.json

@@ -28,7 +28,7 @@
     "@types/chai": "4.2.22",
     "@types/express": "4.17.13",
     "@types/mocha": "9.0.0",
-    "@types/node": "15.14.1",
+    "@types/node": "15.14.9",
     "@typescript-eslint/eslint-plugin": "5.1.0",
     "@typescript-eslint/parser": "5.1.0",
     "chai": "4.3.4",