The package php-guzzlehttp-psr7 1.7.0-1~deb11u1 has been added to kali-rolling. It has been imported from Debian: https://tracker.debian.org/pkg/php-guzzlehttp-psr7 -- More information about php-guzzlehttp-psr7: http://pkg.kali.org/pkg/php-guzzlehttp-psr7