Merge pull request #23791 from prathamesh-sonpatki/fix-changelog

Improve CHANGELOG for https://github.com/rails/rails/pull/17043 [ci skip]

actionview/CHANGELOG.md

-*   Fix `button_to`'s `:params` option support to correctly generated input names for nested hashes/arrays.
+*   Add support for nested hashes/arrays to `:params` option of `button_to` helper.
 
     *James Coleman*