Fix button link foreground color

This commit fixes a regression that caused button links to render with a
dark foreground instead of a white foreground.

app/assets/stylesheets/framework/lists.scss

@@ -123,7 +123,7 @@ ul.content-list {
       font-weight: $gl-font-weight-bold;
     }
 
-    a:not(.default-link-color) {
+    a {
       color: $gl-text-color;
     }
 

app/assets/stylesheets/pages/tags.scss

+.tag-release-link {
+  color: $blue-600 !important;
+}

app/views/projects/tags/_tag.html.haml

@@ -24,7 +24,7 @@
       .text-secondary
         = icon('rocket')
         = _("Release")
-        = link_to release.name, project_releases_path(@project, anchor: release.tag), class: 'default-link-color'
+        = link_to release.name, project_releases_path(@project, anchor: release.tag), class: 'tag-release-link'
       - if release.description.present?
         .description.md.prepend-top-default
           = markdown_field(release, :description)

changelogs/unreleased/nfriend-fix-lin.yml

+---
+title: Fix button link foreground color
+merge_request: 18669
+author:
+type: fixed