Update vimeo/psalm requirement from 5.9.0 to 5.12.0

Updates the requirements on [vimeo/psalm](https://github.com/vimeo/psalm) to permit the latest version.
- [Release notes](https://github.com/vimeo/psalm/releases)
- [Commits](vimeo/psalm@5.9.0...5.12.0)

---
updated-dependencies:
- dependency-name: vimeo/psalm
  dependency-type: direct:development
...

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