fix: examples/2-standard-multiple-api-specs/package.json & examples/2-standard-multiple-api-specs/package-lock.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ONHEADERS-10773729

Author: snyk-bot

examples/2-standard-multiple-api-specs/package-lock.json

@@ -13,7 +13,7 @@
   "license": "MIT",
   "dependencies": {
     "express-openapi-validator": "^5.5.3",
-    "morgan": "^1.10.0"
+    "morgan": "^1.10.1"
   },
   "devDependencies": {
     "nodemon": "^2.0.4",