2.19.4 release notes (#13784)

Co-authored-by: Collin <collin@prefect.io>

RELEASE-NOTES.md

@@ -1,5 +1,18 @@
 # Prefect Release Notes
 
+## Release 2.19.4
+
+### Fixes
+- Fix `Could not find flow '[...]' in '[...].py'` errors when using `prefect deploy` to deploy async flows - https://github.com/PrefectHQ/prefect/pull/13769
+- Fix parameter schema generation for flows with positional only and keyword only arguments when using `prefect deploy` - https://github.com/PrefectHQ/prefect/pull/13778
+- Fix use of dynamic models in flow typing when using `prefect deploy` - https://github.com/PrefectHQ/prefect/pull/13781
+- Allow clients to provide task run ID during creation to enable compatibility between 2.x servers and 3.0.0rc clients - https://github.com/PrefectHQ/prefect/pull/13683
+
+### Documentation
+- Add Docker deployment steps page to centralized integration docs - https://github.com/PrefectHQ/prefect/pull/13720
+
+**All changes**: https://github.com/PrefectHQ/prefect/compare/2.19.3...2.19.4
+
 ## Release 2.19.3
 
 ### New method for generating parameter schemas without dependencies