Add True Tickets to ADOPTERS.md
- [Timescale](https://www.timescale.com)
- [Tradeshift](https://tradeshift.com/)
- [Transit](https://transit.app)
+- [True Tickets](https://true-tickets.com)
- [Web Summit](https://websummit.com)
- [Wiz Security](https://www.wiz.io/)
- [xCloud](https://www.xbox.com/en-US/xbox-game-streaming/project-xcloud)
