Apply new GitLab UI for buttons in create tag page

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

@@ -52,6 +52,6 @@
         = render 'shared/zen', attr: :release_description, classes: 'note-textarea', placeholder: s_('TagsPage|Write your release notes or drag files here…'), current_text: @release_description, qa_selector: 'release_notes_field'
         = render 'shared/notes/hints'
   .form-actions
-    = button_tag s_('TagsPage|Create tag'), class: 'btn btn-success', data: { qa_selector: "create_tag_button" }
-    = link_to s_('TagsPage|Cancel'), project_tags_path(@project), class: 'btn btn-cancel'
+    = button_tag s_('TagsPage|Create tag'), class: 'gl-button btn btn-confirm', data: { qa_selector: "create_tag_button" }
+    = link_to s_('TagsPage|Cancel'), project_tags_path(@project), class: 'gl-button btn btn-default btn-cancel'
 %script#availableRefs{ type: "application/json" }= @project.repository.ref_names.to_json.html_safe

changelogs/unreleased/gl-button-create-tag.yml

+---
+title: Apply new GitLab UI for buttons in create tag page
+merge_request:
+author: Yogi (@yo)
+type: changed