[Caching] Add VersionResolver::PACKAGE_VERSION to FileHashComputer::compute() so cache cleared on composer update got new version

[samsonasik]

@TomasVotruba @staabm here to include VersionResolver::PACKAGE_VERSION value to be part of hash to ensure when run:

composer update

# got new version

# re-run rector got automatically cleared cache
vendor/bin/rector

[samsonasik]

All checks have passed 🎉 @TomasVotruba I think it is ready.

[TomasVotruba]

Thanks 🙏