fix: Run actiontext migrations for rails >= 6
fix: Run actiontext migrations for rails >= 6

- as actiontext is made available on rails 6.0

biow0lf/shoulda-matchers,thoughtbot/shoulda-matchers,biow0lf/shoulda-matchers,thoughtbot/shoulda-matchers,thoughtbot/shoulda-matchers,biow0lf/shoulda-matchers,biow0lf/shoulda-matchers,thoughtbot/shoulda-matchers