📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest Changes
 
+* ⬆️ Upgrade Ubuntu version for docs workflow. PR [#5971](https://github.com/tiangolo/fastapi/pull/5971) by [@tiangolo](https://github.com/tiangolo).
 * 🌐 Add Russian translation for `docs/ru/docs/tutorial/body-fields.md`. PR [#5898](https://github.com/tiangolo/fastapi/pull/5898) by [@simatheone](https://github.com/simatheone).
 * 🌐 Add Russian translation for `docs/ru/docs/help-fastapi.md`. PR [#5970](https://github.com/tiangolo/fastapi/pull/5970) by [@tiangolo](https://github.com/tiangolo).
 * 🌐 Add Portuguese translation for `docs/pt/docs/tutorial/static-files.md`. PR [#5858](https://github.com/tiangolo/fastapi/pull/5858) by [@batlopes](https://github.com/batlopes).