Update workshop location for 2027 event

Author: tiamiceli

docs/workshops.md

@@ -2,7 +2,7 @@
 
 ![Workshop map](img/workshop_map.webp)
 
-## 7. 2027 TBD @ TBD, USA 🇺🇸 TBD, 2027
+## 7. 2027 LBNL @ Berkeley, USA 🇺🇸 TBD, 2027
 ## 6. [2026 SPring8 @ Himeji, Japan 🇯🇵](https://indico.rcnp.osaka-u.ac.jp/event/2676/) April 21-24, 2026
 ## 5. [2025 CERN @ Geneva, Switzerland 🇨🇭](https://indico.cern.ch/event/1382428/) April 8–11, 2025
 ## 4. [2024 PAL @ Gyeongju, Korea 🇰🇷](https://www.indico.kr/event/47/) March 5–8, 2024