Bug#1083561: protontricks: raising the severity, still using the pkg_resources module

[Matthias Klose]

Control: severity -1 important
Control: tags -1 + forky

The protontricks package still uses the pkg_resources module.

Raising the severity of this issue. At the end of the
year 2025, raising the severity again to serious.

If the package is a namespace package, then please lower
the severity again to normal.