Since the magento-coding-standard uses Rector 1.x which in turn requires Phpstan 1.x it is currently not possible to use the latest versions of those tools in conjunction with this package. See also latest versions of bitExpert/phpstan-magento.

I have had a look at the upgrade instructions and extending the range of supported rector versions should be possible without code changes, ie incomposer.json change

"rector/rector": "^1.2.4",

to

"rector/rector": "^1.2.4 || ^2.0.0",

AbstractScopeAwareRector is not used
https://github.com/search?q=repo%3Amagento%2Fmagento-coding-standard%20AbstractScopeAwareRector&type=code

getRuleDefinition usage becomes optional
https://github.com/search?q=repo%3Amagento%2Fmagento-coding-standard%20getRuleDefinition&type=code