Add Lendico to ADOPTERS.md
- [Kairos](https://kairos.com)
- [Kurio](https://kurio.id)
- [LeadIQ](https://leadiq.com)
+- [Lendico](https://www.lendico.de/)
- [M1 Finance](https://www.m1finance.com/)
- [MattePaint](https://www.mattepaint.com/)
- [MercedesBenz.io](https://www.mercedes-benz.io/)
