Upgrade/Install phpMyAdmin on Debian

Rule #1: “Do not fix, if it’s not broken”
I’ve had version phpMyAdmin 5.0.2 since 2020 without any problem (PHP 7.+, 8.0) until I decided to look at PHP 8.1. Number of “Deprecated” messages from twig/twig package just killed the system, and Composer failed to update outdated packages.
Rule #2 extends #1: If you do not have a VERY GOOD REASON to use PHP 8.1, stay with the current version