Updates Save button to have a green bg

The Save button in the environments create/edit
form was white, it should be green.

app/views/projects/environments/_form.html.haml

@@ -17,5 +17,5 @@
       = f.url_field :external_url, class: 'form-control'
 
     .form-actions
-      = f.submit _('Save'), class: 'btn btn-save'
+      = f.submit _('Save'), class: 'btn btn-success'
       = link_to _('Cancel'), project_environments_path(@project), class: 'btn btn-cancel'

changelogs/unreleased/60261-save-btn-env.yml

+---
+title: Fixes create button background for Environments form
+merge_request: 27161
+author:
+type: fixed