fix: alert link underline

Co-authored-by: Andrea Stagi <stagi.andrea@gmail.com>

src/scss/bootstrap-italia.scss

@@ -44,7 +44,6 @@
 @import 'bootstrap/scss/breadcrumb';
 @import 'bootstrap/scss/pagination';
 @import 'bootstrap/scss/badge';
-@import 'bootstrap/scss/alert';
 @import 'bootstrap/scss/progress';
 @import 'bootstrap/scss/list-group';
 @import 'bootstrap/scss/close';

src/scss/custom/_alert.scss

@@ -11,9 +11,6 @@
   background-position: 20px 12px;
   background-repeat: no-repeat;
   background-size: 32px 32px;
-  .alert-link {
-    color: $link-color;
-  }
 }
 
 // Headings for larger alerts
@@ -25,13 +22,13 @@
 
 // Provide class for links that match alerts
 .alert-link {
-  font-weight: $alert-link-font-weight;
-  text-decoration: none;
+  color: $link-color;
+  font-weight: $font-weight-semibold;
+  text-decoration: underline;
 }
 
 // Dismissible alerts
 // Expand the right padding and account for the close button's positioning.
-
 .alert-dismissible {
   padding-right: ($alert-padding-x * 2);
   // Adjust close link position
@@ -47,7 +44,6 @@
 
 // Alternate styles
 // Generate contextual modifier classes for colorizing the alert.
-
 @each $color, $value in $theme-colors {
   @if ($color == 'danger' or $color == 'warning' or $color == 'success' or $color == 'info' or $color == 'primary') {
     .alert-#{$color} {