Update release notes

release-notes/10-x.md

@@ -2,6 +2,9 @@
 
 - **We no longer support .NET 4.5 and .NET 4.6.**
 
+## [Release 10.4.1](https://www.nuget.org/packages/Microsoft.ProgramSynthesis/10.4.1) - 2024-11-28
+*10.4.0 is superseded by 10.4.1.*
+
 ## [Release 10.3.0](https://www.nuget.org/packages/Microsoft.ProgramSynthesis/10.3.0) - 2024-10-28
 - Nearly all SDK projects now target only nestandard2.0 (but this should not change which kinds of projects can consume them since netstandard2.0 is consumable by net462 and newer as well as essentially all .net core versions).