Bump coduo/php-to-string from 3.2.0 to 3.2.1

Bumps [coduo/php-to-string](https://github.com/coduo/php-to-string) from 3.2.0 to 3.2.1.
- [Release notes](https://github.com/coduo/php-to-string/releases)
- [Changelog](https://github.com/coduo/php-to-string/blob/3.x/CHANGELOG.md)
- [Commits](coduo/php-to-string@3.2.0...3.2.1)

---
updated-dependencies:
- dependency-name: coduo/php-to-string
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]