ci: bump version to v0.9.21

Author: github-actions[bot]

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## [0.9.21]
+
+- Released @ 6/2025 (UTC)
+- Update dependencies
+
 ## [0.9.20]
 
 - Released @ 6/2025 (UTC)

README.md

@@ -6,7 +6,7 @@ Dart & Flutter Packages by dev-cetera.com & contributors.
 [![sponsor](https://img.shields.io/badge/sponsor-grey?logo=github-sponsors)](https://github.com/sponsors/dev-cetera)
 [![patreon](https://img.shields.io/badge/patreon-grey?logo=patreon)](https://www.patreon.com/c/RobertMollentze)
 [![pub](https://img.shields.io/pub/v/df_generate_dart_models_core.svg)](https://pub.dev/packages/df_generate_dart_models_core)
-[![tag](https://img.shields.io/badge/tag-v0.9.20-purple?logo=github)](https://github.com/dev-cetera/df_generate_dart_models_core/tree/v0.9.20)
+[![tag](https://img.shields.io/badge/tag-v0.9.21-purple?logo=github)](https://github.com/dev-cetera/df_generate_dart_models_core/tree/v0.9.21)
 [![license](https://img.shields.io/badge/license-MIT-blue.svg)](https://raw.githubusercontent.com/dev-cetera/df_generate_dart_models_core/main/LICENSE)
 
 ---