Update sponsor.md

Author: ^cypher

conferences/conference-2025/sponsor.md

@@ -41,6 +41,7 @@ FHE.org 2025 gratefully acknowledges the financial support of <i>(in alphabetica
 <span style="padding-right:10px"><a href="https://desilo.ai/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/fd3f8a34-c3c3-4f79-ae17-deb2cc93374f" width="150px"></a></span>
 <span style="padding-right:10px"><a href="https://eaglys.co.jp/en/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/54a0bb9f-0546-44cb-a1ed-7d0b9785fbd1" width="150px"></a></span>
 <span style="padding-right:10px"><a href="https://enveil.com/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/87f3007c-1721-490d-98d0-cea5d7e9f9fd" width="150px"></a></span>
+<span style="padding-right:10px"><a href="https://flashbots.net/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/a35b379f-bfc6-4abc-99a7-9a3c7f1a3e38" width="150px"></a></span>
 <span style="padding-right:10px"><a href="https://heaan.it/"><img src="https://user-images.githubusercontent.com/5758427/216011474-c46580f9-e239-4582-ad21-7cc091cbff18.png" width="150px"></a></span>
 <span style="padding-right:10px"><a href="https://www.inco.network/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/386095b7-306b-45b0-baa3-d6a1d2d6bca1" width="150px"></a></span>
 <span style="padding-right:10px"><a href="https://lambdaclass.com/"><img src="https://github.com/FHE-org/fhe-org.github.io/assets/37557436/5ce3c1d2-dbbe-4556-a2e1-9e3e1d271e0a" width="150px"></a></span>