IndexCleanCommand uses symfony/finder when is not declared as dependency

[rodrigoaguilera]

I discovered there is a command to clean the index cache but trying to use gave m the error

PHP Fatal error:  Uncaught Error: Class "Symfony\Component\Finder\Finder" not found

I required the package in my root composer.json but I think it is an undeclared dependency of phpactor.

[dantleech]

Indeed, we should either use something else or add that dep in composer.json, this is the only place it's used, probably we can just use glob() cc @mamazu

[dantleech]

Fixed and tagged a new release 👍