Missing semicolon after @layer in acui.css

[brandon-schmalz]

The file assets/css/acui.css is missing a semicolon at the very end of the last rule in the file:
https://github.com/codepress/admin-columns/blob/cb24c89f15ff2d074289cdfc66781785ea12b0a1/assets/css/acui.css

Currently:
... @layer acui, acui-components

Should be:
... @layer acui, acui-components;

This is causing CSS parsing issues when Wordpress concatenates this file with other CSS files. The @layer at-rule requires a semicolon terminator.

I believe the CSS file is compiled from this SCSS file:
https://github.com/codepress/admin-columns/blob/cb24c89f15ff2d074289cdfc66781785ea12b0a1/src/scss/acui.scss