see #15961 (comment)

branch with simple test by @sgiehl:
https://github.com/matomo-org/matomo/compare/phpdi

This fixes the deprecation warning of a dependency:

Package container-interop/container-interop is abandoned, you should avoid using it. Use psr/container instead.

Migration guide: https://github.com/PHP-DI/PHP-DI/blob/6.0.0/doc/migration/6.0.md
Changelogs: https://github.com/PHP-DI/PHP-DI/releases