Composer errors

[betterthanbreakfast]

Mediawiki 1.34.0
PHP 7.3.11

Package phpunit/phpunit-mock-objects is abandoned, you should avoid using it. No replacement was suggested.
Package guzzle/guzzle is abandoned, you should avoid using it. Use guzzlehttp/guzzle instead.
Package satooshi/php-coveralls is abandoned, you should avoid using it. Use php-coveralls/php-coveralls instead.