chore(main): release 5.0.0-alpha.21.3 (#185)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  ".": "5.0.0-alpha.21.2"
+  ".": "5.0.0-alpha.21.3"
 }

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+## [5.0.0-alpha.21.3](https://github.com/fable-compiler/Fable.Python/compare/v5.0.0-alpha.21.2...v5.0.0-alpha.21.3) (2025-12-19)
+
+
+### Features
+
+* add Fable.Types module for runtime type detection ([#184](https://github.com/fable-compiler/Fable.Python/issues/184)) ([6e1e902](https://github.com/fable-compiler/Fable.Python/commit/6e1e902a0203d24206c3a7e6719383e464193fd5))
+
 ## [5.0.0-alpha.21.2](https://github.com/fable-compiler/Fable.Python/compare/v5.0.0-alpha.21.1...v5.0.0-alpha.21.2) (2025-12-18)