discontinued packages?

When updating (fomr composer.json of commit c4500f10 with:

composer update

I obtain the following warning:

 - Updating phpunit/phpunit (8.5.2 => 8.5.8): Downloading (100%)         
symfony/polyfill-intl-normalizer suggests installing ext-intl (For best performance)
Package jakub-onderka/php-console-color is abandoned, you should avoid using it. Use php-parallel-lint/php-console-color instead.
Package jakub-onderka/php-console-highlighter is abandoned, you should avoid using it. Use php-parallel-lint/php-console-highlighter instead.
Package phpunit/php-token-stream is abandoned, you should avoid using it. No replacement was suggested.