Add OpenTofu Day NA 2025 to Media section

Co-authored-by: virtualroot <1007429+virtualroot@users.noreply.github.com>

Author: Copilot

README.md

@@ -162,6 +162,7 @@
 - [CNCF - OpenTofu Day Europe 2024](https://www.youtube.com/playlist?list=PLnVotLM2Qsyiw_6Pd_9WxRRLdrUAs3c1c)
 - [CNCF - OpenTofu Day North America 2024](https://www.youtube.com/playlist?list=PLnVotLM2QsyhhCO5TgEUsAip601j3NUlm)
 - [CNCF - OpenTofu Day Europe 2025](https://www.youtube.com/playlist?list=PLj6h78yzYM2P1WUOx9Ny6Q3JJxiAs1A3M)
+- [CNCF - OpenTofu Day North America 2025](https://www.youtube.com/playlist?list=PLj6h78yzYM2MATqCH0Tux6phUq9o4-lnG)
 
 ## Podcasts