Beat Saber v1.18.1 Released

Hey players, update 1.18.1 is ready for download. We fixed a few multiplayer issues for Steam and made some tweaks in environments.
Release notes:
- Fixed bug when menu fog will be wrong after playing multiplayer game
- Fixed bug when UI will be broken when opening Steam overlay while level selection is open
- Fixed bug when state of the lobby will be broken when server host switch to spectator
- Fixed note distortion for non-Billie environments
- Tweaked lights in various environments