Bump stripe from 4.18.0 to 4.18.1
Bump stripe from 4.18.0 to 4.18.1

Bumps [stripe](https://github.com/stripe/stripe-ruby) from 4.18.0 to 4.18.1.
- [Release notes](https://github.com/stripe/stripe-ruby/releases)
- [Changelog](https://github.com/stripe/stripe-ruby/blob/master/CHANGELOG.md)
- [Commits](https://github.com/stripe/stripe-ruby/compare/v4.18.0...v4.18.1)
indentlabs/notebook,indentlabs/notebook,indentlabs/notebook