Merge branch 'alert-management-colour' into 'master'

Update alert hover to gray-10

See merge request gitlab-org/gitlab!32068

app/assets/stylesheets/pages/alert_management/list.scss

@@ -56,7 +56,7 @@
         min-height: 68px;
 
         &:last-child {
-          background-color: $gray-normal;
+          background-color: $gray-10;
 
           &::before {
             content: none !important;

changelogs/unreleased/alert-management-colour.yml

+---
+title: Update alert management table background colour to correct gray
+merge_request: 32068
+author:
+type: other