update release notes

Author: MikeAlhayek

src/docs/releases/2.2.1.md

@@ -1,3 +1,15 @@
 ## Orchard Core 2.2.1
 
-**Release Date:** Not yet released
+**Release Date:** October 6, 2025
+
+## What's Changed
+* [release/2.2] Allow Liquid tags by @gvkries in https://github.com/OrchardCMS/OrchardCore/pull/18381
+* [release/2.2] CorrelateTask fix (17929) by @github-actions[bot] in https://github.com/OrchardCMS/OrchardCore/pull/18415
+* [release/2.2] Prevent unnecessary exception "Error deleting cache folder ..." when the folder doesn't exist by @github-actions[bot] in https://github.com/OrchardCMS/OrchardCore/pull/18414
+* [release/2.2] Associate shapes build from template files to all enabled features by @github-actions[bot] in https://github.com/OrchardCMS/OrchardCore/pull/18417
+* Release 2.2.1 by @MikeAlhayek in https://github.com/OrchardCMS/OrchardCore/pull/18418
+* [release/2.2]  Restore original ordering in `DefaultContentManager.GetAsync` results by @github-actions[bot] in https://github.com/OrchardCMS/OrchardCore/pull/18431
+* [release/2.2] Correct mapping of raw startup classes to their respective features by @github-actions[bot] in https://github.com/OrchardCMS/OrchardCore/pull/18430
+
+
+**Full Changelog**: https://github.com/OrchardCMS/OrchardCore/compare/v2.2.0...v2.2.1