migrate_empty_spec.rb in ridgepole-0.7.8

- old
+ new

@@ -1,4 +1,6 @@
+# frozen_string_literal: true
+
 describe 'Ridgepole::Client#diff -> migrate' do
   context 'when database is empty' do
     let(:actual_dsl) { '' }
     let(:expected_dsl) do
       erbh(<<-ERB)