📝 Update release notes

Author: github-actions

release-notes.md

@@ -4,6 +4,7 @@
 
 ### Refactors
 
+* 🔧 Add `ENV PYTHONUNBUFFERED=1` to log output directly to Docker. PR [#1378](https://github.com/fastapi/full-stack-fastapi-template/pull/1378) by [@tiangolo](https://github.com/tiangolo).
 * 💡 Remove unnecessary comment. PR [#1260](https://github.com/fastapi/full-stack-fastapi-template/pull/1260) by [@sebhani](https://github.com/sebhani).
 
 ### Internal