Bump the development-dependencies group with 3 updates (#20)

Bumps the development-dependencies group with 3 updates: [phpstan/phpstan](https://github.com/phpstan/phpstan), [phpstan/phpstan-strict-rules](https://github.com/phpstan/phpstan-strict-rules) and [squizlabs/php_codesniffer](https://github.com/PHPCSStandards/PHP_CodeSniffer).


Updates `phpstan/phpstan` from 1.12.3 to 1.12.5
- [Release notes](https://github.com/phpstan/phpstan/releases)
- [Changelog](https://github.com/phpstan/phpstan/blob/2.0.x/CHANGELOG.md)
- [Commits](phpstan/phpstan@1.12.3...1.12.5)

Updates `phpstan/phpstan-strict-rules` from 1.6.0 to 1.6.1
- [Release notes](https://github.com/phpstan/phpstan-strict-rules/releases)
- [Commits](phpstan/phpstan-strict-rules@1.6.0...1.6.1)

Updates `squizlabs/php_codesniffer` from 3.10.2 to 3.10.3
- [Release notes](https://github.com/PHPCSStandards/PHP_CodeSniffer/releases)
- [Changelog](https://github.com/PHPCSStandards/PHP_CodeSniffer/blob/master/CHANGELOG.md)
- [Commits](PHPCSStandards/PHP_CodeSniffer@3.10.2...3.10.3)

---
updated-dependencies:
- dependency-name: phpstan/phpstan
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
- dependency-name: phpstan/phpstan-strict-rules
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
- dependency-name: squizlabs/php_codesniffer
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: development-dependencies
...

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