[6.x] update changelog

Author: TBlindaruk

CHANGELOG-6.x.md

@@ -1,6 +1,14 @@
 # Release Notes for 6.x
 
-## [Unreleased](https://github.com/laravel/framework/compare/v6.20.27...6.x)
+## [Unreleased](https://github.com/laravel/framework/compare/v6.20.28...6.x)
+
+
+## [v6.20.28 (2021-06-15)](https://github.com/laravel/framework/compare/v6.20.27...v6.20.28)
+
+### Fixed
+- Fixed dns_get_record loose check of A records for active_url rule ([#37675](https://github.com/laravel/framework/pull/37675))
+- Type hinted arguments for Illuminate\Validation\Rules\RequiredIf ([#37688](https://github.com/laravel/framework/pull/37688))
+- Fixed when passed object as parameters to scopes method ([#37692](https://github.com/laravel/framework/pull/37692))
 
 
 ## [v6.20.27 (2021-05-11)](https://github.com/laravel/framework/compare/v6.20.26...v6.20.27)