Bump express-session from 1.17.3 to 1.18.0 in /graph-sample

Bumps [express-session](https://github.com/expressjs/session) from 1.17.3 to 1.18.0.
- [Release notes](https://github.com/expressjs/session/releases)
- [Changelog](https://github.com/expressjs/session/blob/master/HISTORY.md)
- [Commits](expressjs/session@v1.17.3...v1.18.0)

---
updated-dependencies:
- dependency-name: express-session
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

graph-sample/package-lock.json

@@ -18,7 +18,7 @@
     "dotenv": "^16.3.2",
     "express": "^4.18.2",
     "express-promise-router": "^4.1.1",
-    "express-session": "^1.17.3",
+    "express-session": "^1.18.0",
     "express-validator": "^7.0.1",
     "hbs": "^4.2.0",
     "http-errors": "^2.0.0",