Mitigate jsonwebtoken vulnerability in samples (#5685)

* Update @azure/identity in samples to mitigate jsonwebtoken vulnerability

* Update OBO sample dependencies to mitigate jsonwebtokenvulnerability

Author: hectormmg

samples/msal-node-samples/on-behalf-of/web-api/package.json

@@ -15,7 +15,7 @@
   "dependencies": {
     "@azure/msal-node": "file:../../../../lib/msal-node",
     "express": "^4.17.1",
-    "jsonwebtoken": "^8.5.1",
+    "jsonwebtoken": "^9.0.0",
     "jwks-rsa": "^1.8.1",
     "uuid": "^8.3.1"
   }