Bump szepeviktor/phpstan-wordpress from 1.3.3 to 1.3.4 (#394)

Bumps [szepeviktor/phpstan-wordpress](https://github.com/szepeviktor/phpstan-wordpress) from 1.3.3 to 1.3.4.
- [Release notes](https://github.com/szepeviktor/phpstan-wordpress/releases)
- [Commits](szepeviktor/phpstan-wordpress@v1.3.3...v1.3.4)

---
updated-dependencies:
- dependency-name: szepeviktor/phpstan-wordpress
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>