Fix standard errors

[sarahraqueld]

On Github actions:

standard: Use Ruby Standard Style (https://github.com/standardrb/standard)
spec/support/macros/define_constant.rb:10:40: Style/ArgumentsForwarding: Use anonymous block arguments forwarding (&).
spec/support/macros/define_constant.rb:11:52: Style/ArgumentsForwarding: Use anonymous block arguments forwarding (&).
spec/support/macros/define_constant.rb:20:32: Style/ArgumentsForwarding: Use anonymous block arguments forwarding (&).
spec/support/macros/define_constant.rb:25:43: Style/ArgumentsForwarding: Use anonymous block arguments forwarding (&).
standard: Run rake standard:fix to fix up to 4 problems.

https://github.com/thoughtbot/factory_bot_rails/actions/runs/9221161554/job/25369617245?pr=468

[smaboshe]

Nice catch!

Would it be worth adding a Standard check to our GitHub Actions?