📝 Update release notes

docs/en/docs/release-notes.md

@@ -2,6 +2,7 @@
 
 ## Latest Changes
 
+* 🐛 Fix `flask.escape` warning for internal tests. PR [#9468](https://github.com/tiangolo/fastapi/pull/9468) by [@samuelcolvin](https://github.com/samuelcolvin).
 * ✅ Refactor 2 tests, for consistency and simplification. PR [#9504](https://github.com/tiangolo/fastapi/pull/9504) by [@tiangolo](https://github.com/tiangolo).
 * ✅ Refactor OpenAPI tests, prepare for Pydantic v2. PR [#9503](https://github.com/tiangolo/fastapi/pull/9503) by [@tiangolo](https://github.com/tiangolo).
 * 🌐 Add Portuguese translation for `docs/pt/docs/advanced/events.md`. PR [#9326](https://github.com/tiangolo/fastapi/pull/9326) by [@oandersonmagalhaes](https://github.com/oandersonmagalhaes).