📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest Changes
 
+* ✅ Fix test error in Windows for `jsonable_encoder`. PR [#9840](https://github.com/tiangolo/fastapi/pull/9840) by [@iudeen](https://github.com/iudeen).
 * 🌐 Add Russian translation for `docs/ru/docs/tutorial/security/index.md`. PR [#9963](https://github.com/tiangolo/fastapi/pull/9963) by [@eVery1337](https://github.com/eVery1337).
 * 🍱 Update sponsors, Fern badge. PR [#9982](https://github.com/tiangolo/fastapi/pull/9982) by [@tiangolo](https://github.com/tiangolo).
 * 👷 Deploy docs to Cloudflare Pages. PR [#9978](https://github.com/tiangolo/fastapi/pull/9978) by [@tiangolo](https://github.com/tiangolo).