docs: add link to recording of OSS Europe talk

Signed-off-by: Christian Schlotter <[email protected]>

talks/README.md

@@ -7,6 +7,7 @@ This directory contains slides and recordings of talks related to `fret-to-robot
 * **Date**: September 17, 2024
 * **Event**: Open Source Summit Europa, Vienna
 * **Slides**: [20240917 OSS Europe Level Up Your Embedded Testing Game.pdf](20240917%20OSS%20Europe%20Level%20Up%20Your%20Embedded%20Testing%20Game.pdf)
+* **Recording**: [Level Up Your Embedded Testing Game – Christian Schlotter, ZEISS & Tobias Kästner, inovex on YouTube](https://www.youtube.com/watch?v=ndQzEjUiXc4)
 * **Abstract**:
 
   Developing embedded software for regulated environments like medical devices presents unique challenges. Crucially,