Fix compiled banner version and wire the live banner into change-version.mjs (#42670)

Author: julien-deramond

build/change-version.mjs

@@ -19,7 +19,7 @@ const FILES = [
   'config.yml',
   'js/src/base-component.js',
   'package.js',
-  'scss/mixins/_banner.scss',
+  'scss/_banner.scss',
   'site/data/docs-versions.yml'
 ]
 

scss/_banner.scss

@@ -1,7 +1,7 @@
 $file: "" !default;
 
 /*!
-  * Bootstrap #{$file} v6.0.0-dev (https://getbootstrap.com/)
+  * Bootstrap #{$file} v6.0.0-alpha1 (https://getbootstrap.com/)
   * Copyright 2011-2026 The Bootstrap Authors
   * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
   */

scss/bootstrap.scss

@@ -1,6 +1,6 @@
+// scss-docs-start import-stack
 @forward "banner";
 
-// scss-docs-start import-stack
 @forward "colors";
 
 // Global CSS variables, layer definitions, and configuration