Remove /vendor directory, improve CI job for Rector

[TomasVotruba]

I'm trying to run project locally and doing a bit cleanup, so we have clean table to work with :)

[TomasVotruba]

Ready to merge 👍

[NotionCommotion]

Thanks Tomas!!! A clue!

Executing script cache:clear [KO]
 [KO]
Script cache:clear returned with error code 255
!!  PHP Fatal error:  Uncaught Symfony\Component\Dotenv\Exception\PathException: Unable to read the "/home/runner/work/rector-symfony/rector-symfony/.env" environment file. in /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/dotenv/Dotenv.php:565
!!  Stack trace:
!!  #0 /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/dotenv/Dotenv.php(92): Symfony\Component\Dotenv\Dotenv->doLoad()
!!  #1 /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/dotenv/Dotenv.php(114): Symfony\Component\Dotenv\Dotenv->load()
!!  #2 /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/dotenv/Dotenv.php(157): Symfony\Component\Dotenv\Dotenv->loadEnv()
!!  #3 /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/runtime/SymfonyRuntime.php(102): Symfony\Component\Dotenv\Dotenv->bootEnv()
!!  #4 /home/runner/work/rector-symfony/rector-symfony/vendor/autoload_runtime.php(23): Symfony\Component\Runtime\SymfonyRuntime->__construct()
!!  #5 /home/runner/work/rector-symfony/rector-symfony/bin/console(11): require_once('...')
!!  #6 {main}
!!    thrown in /home/runner/work/rector-symfony/rector-symfony/vendor/symfony/dotenv/Dotenv.php on line 565
!!  
Script @auto-scripts was called via post-update-cmd
Error: The process '/usr/local/bin/composer' failed with exit code 255

[NotionCommotion]

Never mind about the clue. Just hadn't included .env in the repository. Since added back in. Github actions doesn't show any errors.