Bump express-session from 1.17.3 to 1.18.1 (#533)

Bumps [express-session](https://github.com/expressjs/session) from 1.17.3 to 1.18.1.
- [Release notes](https://github.com/expressjs/session/releases)
- [Changelog](https://github.com/expressjs/session/blob/master/HISTORY.md)
- [Commits](expressjs/session@v1.17.3...v1.18.1)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>