build(deps-dev): bump phpunit/php-file-iterator from 5.0.1 to 5.1.0

Bumps [phpunit/php-file-iterator](https://github.com/sebastianbergmann/php-file-iterator) from 5.0.1 to 5.1.0.
- [Release notes](https://github.com/sebastianbergmann/php-file-iterator/releases)
- [Changelog](https://github.com/sebastianbergmann/php-file-iterator/blob/main/ChangeLog.md)
- [Commits](sebastianbergmann/php-file-iterator@5.0.1...5.1.0)

---
updated-dependencies:
- dependency-name: phpunit/php-file-iterator
  dependency-type: indirect
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]