build(deps): bump phpgt/cssxpath from 1.4.0 to 1.5.0 (#673)

Bumps [phpgt/cssxpath](https://github.com/phpgt/CssXPath) from 1.4.0 to 1.5.0.
- [Release notes](https://github.com/phpgt/CssXPath/releases)
- [Commits](phpgt/CssXPath@v1.4.0...v1.5.0)

---
updated-dependencies:
- dependency-name: phpgt/cssxpath
  dependency-version: 1.5.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]