[REF] *: BS5: migration

Automated change made by a lot of RegEx to change all think that is
possible to automate.

https://getbootstrap.com/docs/5.1/migration

Task ID: 2766483

Part-of: odoo/odoo#95450

addons/auth_oauth/static/src/scss/auth_oauth.scss

@@ -9,7 +9,8 @@
 
     .o_custom_icon {
         margin: 0 0.15em;
-        @include size(1em);
+        width: 1em;
+        height: 1em;
         border: 3px solid #875A7B;
         border-radius: 100%;
         transform: translateY(2px);

addons/auth_oauth/views/auth_oauth_templates.xml

@@ -3,7 +3,7 @@
         <template id="providers" name="OAuth Providers">
             <t t-if="len(providers) &gt; 0">
                 <em t-attf-class="d-block text-center text-muted small my-#{len(providers) if len(providers) &lt; 3 else 3}">- or -</em>
-                <div class="o_auth_oauth_providers list-group mt-1 mb-1 text-left">
+                <div class="o_auth_oauth_providers list-group mt-1 mb-1 text-start">
                     <a t-foreach="providers" t-as="p" class="list-group-item list-group-item-action py-2" t-att-href="p['auth_link']">
                         <i t-att-class="p['css_class']"/>
                         <t t-esc="p['body']"/>