chore(README): Update talks, adding FOSDEM 2025 talks

PR: #137
Signed-off-by: Charalampos Mainas <charalampos.mainas@gmail.com>
Reviewed-by: Anastassios Nanos <ananos@nubificus.co.uk>
Reviewed-by: Georgios Ntoutsos <gntouts@nubificus.co.uk>
Approved-by: Anastassios Nanos <ananos@nubificus.co.uk>

Author: cmainas

README.md

@@ -160,8 +160,10 @@ such as:
 
 - [Open Source Summit
   2023](https://osseu2023.sched.com/event/1OGgY/urunc-a-unikernel-container-runtime-georgios-ntoutsos-anastassios-nanos-nubificus-ltd)
-- [FOSDEM 2024](https://archive.fosdem.org/2024/schedule/event/fosdem-2024-3402-from-containers-to-unikernels-navigating-integration-challenges-in-cloud-native-environments/)
+- [FOSDEM 2024 -- Containers devroom](https://archive.fosdem.org/2024/schedule/event/fosdem-2024-3402-from-containers-to-unikernels-navigating-integration-challenges-in-cloud-native-environments/)
 - [KubeCon 2024](https://kccnceu2024.sched.com/event/1YeRd/unikernels-in-k8s-performance-and-isolation-for-serverless-computing-with-knative-anastassios-nanos-ioannis-plakas-nubis-pc)
+- [FOSDEM 2025 -- Containers devroom](https://fosdem.org/2025/schedule/event/fosdem-2025-6284-less-overhead-strong-isolation-running-containers-in-minimal-specialized-linux-vms/)
+- [FOSDEM 2025 -- WASM devroom](https://fosdem.org/2025/schedule/event/fosdem-2025-6292-wasm-meets-unikernels-secure-and-efficient-cloud-native-deployments/)
 
 ## Contributing