Bump stripe/stripe-php from 7.31.0 to 7.39.0

Bumps [stripe/stripe-php](https://github.com/stripe/stripe-php) from 7.31.0 to 7.39.0.
- [Release notes](https://github.com/stripe/stripe-php/releases)
- [Changelog](https://github.com/stripe/stripe-php/blob/master/CHANGELOG.md)
- [Commits](stripe/stripe-php@v7.31.0...v7.39.0)

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