Bump nette/php-generator from 4.0.7 to 4.0.8

Bumps [nette/php-generator](https://github.com/nette/php-generator) from 4.0.7 to 4.0.8.
- [Release notes](https://github.com/nette/php-generator/releases)
- [Commits](nette/php-generator@v4.0.7...v4.0.8)

---
updated-dependencies:
- dependency-name: nette/php-generator
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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