Fix percision failing test on CI

The db configuration can effect the percision of timestamps. See this:
travisjeffery/timecop#146 . Works locally of
course because of local db setup, CI it failed, so this just truncates
at the millisecond.

spec/lib/grape_token_auth/orm_integrations/active_record_token_auth_spec.rb

@@ -245,7 +245,8 @@ module ActiveRecord
         let(:opts)     { {} }
 
         before do
-          Timecop.freeze
+          # Truncate time because db can be setup with less time percision
+          Timecop.freeze(Time.now.change(usec: 0))
           allow(LookupToken).to receive(:generate).and_return([token, encoded])
           @returned = user.send_reset_password_instructions(opts)
           user.reload