Move `let` calls inside the `describe` block using them

spec/features/merge_requests/user_uses_slash_commands_spec.rb

@@ -3,17 +3,17 @@ require 'rails_helper'
 feature 'Merge Requests > User uses quick actions', js: true do
   include QuickActionsHelpers
 
-  let(:user) { create(:user) }
-  let(:project) { create(:project, :public, :repository) }
-  let(:merge_request) { create(:merge_request, source_project: project) }
-  let!(:milestone) { create(:milestone, project: project, title: 'ASAP') }
-
   it_behaves_like 'issuable record that supports quick actions in its description and notes', :merge_request do
     let(:issuable) { create(:merge_request, source_project: project) }
     let(:new_url_opts) { { merge_request: { source_branch: 'feature', target_branch: 'master' } } }
   end
 
   describe 'merge-request-only commands' do
+    let(:user) { create(:user) }
+    let(:project) { create(:project, :public, :repository) }
+    let(:merge_request) { create(:merge_request, source_project: project) }
+    let!(:milestone) { create(:milestone, project: project, title: 'ASAP') }
+
     before do
       project.team << [user, :master]
       sign_in(user)