add php-cgi-bin alternative
Need to run update-alternatives for php-cgi-bin.
root@bullseye-test:~# ls -l /etc/alternatives/*php*
lrwxrwxrwx 1 root root 15 Aug 19 17:43 /etc/alternatives/php -> /usr/bin/php7.4
lrwxrwxrwx 1 root root 31 Aug 19 17:43 /etc/alternatives/php.1.gz -> /usr/share/man/man1/php7.4.1.gz
lrwxrwxrwx 1 root root 19 Aug 19 17:43 /etc/alternatives/php-cgi -> /usr/bin/php-cgi7.4
lrwxrwxrwx 1 root root 35 Aug 19 17:43 /etc/alternatives/php-cgi.1.gz -> /usr/share/man/man1/php-cgi7.4.1.gz
lrwxrwxrwx 1 root root 23 Aug 19 17:28 /etc/alternatives/php-cgi-bin -> /usr/lib/cgi-bin/php8.0
lrwxrwxrwx 1 root root 24 Aug 19 17:43 /etc/alternatives/php-fpm.sock -> /run/php/php7.4-fpm.sock