build(deps): bump steam-user from 4.29.3 to 5.2.0

Bumps [steam-user](https://github.com/DoctorMcKay/node-steam-user) from 4.29.3 to 5.2.0.
- [Release notes](https://github.com/DoctorMcKay/node-steam-user/releases)
- [Commits](DoctorMcKay/node-steam-user@v4.29.3...v5.2.0)

---
updated-dependencies:
- dependency-name: steam-user
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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