Fix part of Geo::PromoteToPrimaryNode specs

spec/gitlab-ctl-commands-ee/lib/geo/promote_to_primary_node_spec.rb

@@ -31,6 +31,7 @@ RSpec.describe Geo::PromoteToPrimaryNode, '#execute' do
       allow(command).to receive(:run_preflight_checks).and_return(true)
       allow(command).to receive(:reconfigure).and_return(true)
+      allow(command).to receive(:toggle_geo_roles).and_return(true)
       allow(command).to receive(:promote_to_primary).and_return(true)
       allow(command).to receive(:success_message).and_return(true)