Apply new GitLab UI for buttons in tags page

app/views/projects/buttons/_remove_tag.html.haml

@@ -2,5 +2,5 @@
 - tag = local_assigns.fetch(:tag, nil)
 - return unless project && tag
 
-%button{ type: "button", class: "js-remove-tag js-confirm-modal-button gl-button btn btn-danger remove-row has-tooltip gl-ml-3 #{protected_tag?(project, tag) ? 'disabled' : ''}", title: s_('TagsPage|Delete tag'), data: { container: 'body', path: project_tag_path(@project, tag.name), modal_attributes: delete_tag_modal_attributes(tag.name) } }
+%button{ type: "button", class: "js-remove-tag js-confirm-modal-button gl-button btn btn-danger btn-icon remove-row has-tooltip gl-ml-3 #{protected_tag?(project, tag) ? 'disabled' : ''}", title: s_('TagsPage|Delete tag'), data: { container: 'body', path: project_tag_path(@project, tag.name), modal_attributes: delete_tag_modal_attributes(tag.name) } }
   = sprite_icon("remove")

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

@@ -41,6 +41,6 @@
     = render 'projects/buttons/download', project: @project, ref: tag.name, pipeline: @tags_pipelines[tag.name]
 
     - if can?(current_user, :admin_tag, @project)
-      = link_to edit_project_tag_release_path(@project, tag.name), class: 'btn btn-edit has-tooltip', title: s_('TagsPage|Edit release notes'), data: { container: "body" } do
+      = link_to edit_project_tag_release_path(@project, tag.name), class: 'btn gl-button btn-default btn-icon btn-edit has-tooltip', title: s_('TagsPage|Edit release notes'), data: { container: "body" } do
         = sprite_icon("pencil")
       = render 'projects/buttons/remove_tag', project: @project, tag: tag

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

@@ -24,9 +24,9 @@
             %li
               = link_to title, filter_tags_path(sort: value), class: ("is-active" if @sort == value)
       - if can?(current_user, :admin_tag, @project)
-        = link_to new_project_tag_path(@project), class: 'btn btn-success new-tag-btn', data: { qa_selector: "new_tag_button" } do
+        = link_to new_project_tag_path(@project), class: 'btn gl-button btn-success', data: { qa_selector: "new_tag_button" } do
           = s_('TagsPage|New tag')
-      = link_to project_tags_path(@project, rss_url_options), title: _("Tags feed"), class: 'btn btn-svg d-none d-sm-inline-block has-tooltip' do
+      = link_to project_tags_path(@project, rss_url_options), title: _("Tags feed"), class: 'btn gl-button btn-default btn-icon d-none d-sm-inline-block has-tooltip' do
         = sprite_icon('rss', css_class: 'qa-rss-icon')
 
   = render_if_exists 'projects/commits/mirror_status'

changelogs/unreleased/gl-button-tags.yml

+---
+title: Apply new GitLab UI for buttons in tags page
+merge_request: 52862
+author: Yogi (@yo)
+type: other