build(deps): bump phpunit/phpunit in /tools/phpunit

Bumps [phpunit/phpunit](https://github.com/sebastianbergmann/phpunit) from 10.5.20 to 10.5.62.
- [Release notes](https://github.com/sebastianbergmann/phpunit/releases)
- [Changelog](https://github.com/sebastianbergmann/phpunit/blob/10.5.62/ChangeLog-10.5.md)
- [Commits](sebastianbergmann/phpunit@10.5.20...10.5.62)

---
updated-dependencies:
- dependency-name: phpunit/phpunit
  dependency-version: 10.5.62
  dependency-type: direct:production
...

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

Author: dependabot[bot]