mymcplus: update to 3.0.4

[KeepBotting]

General

• This is a new package and it conforms to the quality requirements

Have the results of the proposed changes been tested?

• I use the packages affected by the proposed changes on a regular basis and confirm this PR works for me
• I generally don't use the affected packages but briefly tested this PR

Does it build and run successfully?

(Please choose at least one native build and, if supported, at least one cross build. More are better.)

• I built this PR locally for my native architecture, (x86_64-glibc)

This project moved to sourcehut so I've updated the links. Current version held in void-packages won't run under py3.9
I only tested the CLI portion of this program, I don't think the GUI works, but I think that is because wxPython is borked?

Edit: odd, CI logs seem to complain about the only two deps wxPython and pyOpenGL but I did not see this behavior when building locally

[abenson]

The errors were in the check phase. You can recreate locally by passing -Q to the ./xbps-src command line. ./xbps-src -Q pkg mymcplus.

Likely just need to add checkdepends="$depends" just below depends=