1.0.6

What's Changed

• Bump actions/checkout from 3 to 4 by @dependabot in #141
• Bump actions/cache from 3 to 4 by @dependabot in #142
• remove useless var/return annotation by @davidlienhard in #145
• fix issue with explicit nullable type by @davidlienhard in #144
• change php versions for tests by @davidlienhard in #146
• change phpstan config by @davidlienhard in #147
• Update phpstan/phpstan requirement from ^1 to ^2 by @dependabot in #143

Full Changelog: 1.0.5...1.0.6