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](https://github.com/vimeo/psalm/compare/3.8.0...4.3.0)

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

• Commit 2ad4f36
• #26: Update vimeo/psalm requirement from ^3.8 to ^4.3
• Branch master

dependabot[bot]