chore(main): release 1.21.4 (#583)

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 @@
 {
-  ".": "1.21.3"
+  ".": "1.21.4"
 }

CHANGELOG.md

@@ -1,5 +1,14 @@
 # Changelog
 
+## [1.21.4](https://github.com/defenseunicorns/uds-common/compare/v1.21.3...v1.21.4) (2025-12-02)
+
+
+### Miscellaneous
+
+* **deps:** update uds common support dependencies ([#586](https://github.com/defenseunicorns/uds-common/issues/586)) ([5696d9c](https://github.com/defenseunicorns/uds-common/commit/5696d9c6340adca43ff0ae0ef1f3aed6fcc59b40))
+* **deps:** update uds common support dependencies ([#588](https://github.com/defenseunicorns/uds-common/issues/588)) ([d1462ce](https://github.com/defenseunicorns/uds-common/commit/d1462ce8712b898d224177d1ab33ce9d9041a264))
+* **doc:** update codeowners example ([#582](https://github.com/defenseunicorns/uds-common/issues/582)) ([2a2322d](https://github.com/defenseunicorns/uds-common/commit/2a2322dac9af5a1c3a7221fade05425dcbc433bb))
+
 ## [1.21.3](https://github.com/defenseunicorns/uds-common/compare/v1.21.2...v1.21.3) (2025-11-05)