📝 Update release notes

[skip ci]

docs/en/docs/release-notes.md

@@ -17,6 +17,7 @@ hide:
 
 ### Translations
 
+* 🌐 Update existing Spanish translations using the new LLM-assisted system using PydanticAI. PR [#13118](https://github.com/fastapi/fastapi/pull/13118) by [@tiangolo](https://github.com/tiangolo).
 * 🌐 Update Chinese translation for `docs/zh/docs/advanced/security/oauth2-scopes.md`. PR [#13110](https://github.com/fastapi/fastapi/pull/13110) by [@ChenPu2002](https://github.com/ChenPu2002).
 * 🌐 Add Indonesian translation for `docs/id/docs/tutorial/path-params.md`. PR [#13086](https://github.com/fastapi/fastapi/pull/13086) by [@gerry-sabar](https://github.com/gerry-sabar).
 * 🌐 Add Korean translation for `docs/ko/docs/tutorial/sql-databases.md`. PR [#13093](https://github.com/fastapi/fastapi/pull/13093) by [@GeumBinLee](https://github.com/GeumBinLee).