[deps] Auth: Update bootstrap to v5 [SECURITY] (#4881)

* [deps] Auth: Update bootstrap to v5 [SECURITY]

* Update bootstrap and import dependencies in site.scss

* Update site.scss to include the theme color 'dark'

* Refactor site.scss to merge the 'primary-accent' theme color into the existing theme colors

* Update bootstrap classes for v5

* Refactor form layout in Index.cshtml and AddExistingOrganization.cshtml

* Revert change to the shield icon in the navbar

* Fix organization form select inputs

* Fixed search input sizes

* Fix elements in Providers and Users search

* More bootstrap migration

* Revert change to tax rate delete button

* Add missing label classes in Users/Edit.cshtml

* More component migrations

* Refactor form classes and labels in CreateMsp.cshtml and CreateReseller.cshtml

* Update package dependencies in Sso

* Revert changes to Providers/Edit.cshtml

* Refactor CreateMultiOrganizationEnterprise.cshtml and Providers/Edit.cshtml for bootstrap 5

* Refactor webpack.config.js to use @popperjs/core instead of popper.js

* Remove popperjs package dependency

* Restore Bootstrap 4 link styling behavior

- Remove default text decoration
- Add underline only on hover

* Update Bootstrap to version 5.3.3

* Update deprecated text color classes from 'text-muted' to 'text-body-secondary' across various views

* Refactor provider edit view for bootstrap 5

* Remove underline in Add/Create organization links in provider page

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Rui Tome <rtome@bitwarden.com>
Co-authored-by: Rui Tomé <108268980+r-tome@users.noreply.github.com>

src/Admin/webpack.config.js

@@ -13,8 +13,6 @@ module.exports = {
   entry: {
     site: [
       path.resolve(__dirname, paths.sassDir, "site.scss"),
-
-      "popper.js",
       "bootstrap",
       "jquery",
       "font-awesome/css/font-awesome.css",