Bump infection/infection from 0.21.3 to 0.21.4

Bumps [infection/infection](https://github.com/infection/infection) from 0.21.3 to 0.21.4.
- [Release notes](https://github.com/infection/infection/releases)
- [Changelog](https://github.com/infection/infection/blob/master/CHANGELOG.md)
- [Commits](infection/infection@0.21.3...0.21.4)

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