chore(deps): Bump @azure/msal-node from 3.6.4 to 3.8.4

Bumps [@azure/msal-node](https://github.com/AzureAD/microsoft-authentication-library-for-js) from 3.6.4 to 3.8.4.
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-js/releases)
- [Commits](AzureAD/microsoft-authentication-library-for-js@msal-node-v3.6.4...msal-node-v3.8.4)

---
updated-dependencies:
- dependency-name: "@azure/msal-node"
  dependency-version: 3.8.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package-lock.json

@@ -9,7 +9,7 @@
     "start": "npm run test && node ./bin/www"
   },
   "dependencies": {
-    "@azure/msal-node": "^3.6.4",
+    "@azure/msal-node": "^3.8.4",
     "@microsoft/microsoft-graph-client": "^3.0.7",
     "connect-flash": "^0.1.1",
     "cookie-parser": "~1.4.7",