v3.11.1

We upgrade to PHPStan 1.12 first to migrate to PHPStan 2.0.

We are waiting for PHPStan 2.0 support for szepeviktor/phpstan-wordpress to migrate to PHPStan 2.0

• chore(phpstan): upgrade PHPStan to v1.12.11
• fix: resolve PHPStan errors
• chore: update dependencies for composer
• refactor: code refactor
• chore: bump version to v3.11.1