chore: add resource under cyber-security:extras:ctfs:sans-holiday-hack-challenge

src/data/roadmaps/cyber-security/content/extras/ctfs/204-sans-holiday-hack-challenge.md

@@ -33,3 +33,5 @@ The SANs Holiday Hack Challenge is a valuable experience for people with an inte
 - **Fun**: Experience the thrill of solving complex security problems while enjoying the festive theme and engaging storyline.
 
 In conclusion, the SANs Holiday Hack Challenge offers a unique opportunity to develop your cybersecurity skills in a fun and challenging environment. Whether you are new to the field or an industry veteran, participating in this event will help you grow professionally and make valuable connections in the cybersecurity community. Don't miss the next SANs Holiday Hack Challenge!
+
+- [SANS Holiday Hack Challenge](https://www.sans.org/holidayhack)