fix(deps): update dependency @types/express to v4.17.14

Author: renovate[bot]

package-lock.json

@@ -44,7 +44,7 @@
     "preinstall:development": "cd mock-server && npm install"
   },
   "dependencies": {
-    "@types/express": "4.17.13",
+    "@types/express": "4.17.14",
     "@types/valid-url": "^1.0.3",
     "ajv": "6.12.6",
     "api-spec-converter": "2.12.0",