Gardenshed: gardenshed.py start-debugger doesn't work on Fedora Workstation 39

[polypixeldev]

Describe the bug
When running python gardenshed.py start-debugger on Fedora Workstation 39, an error is raised:

 line 4: /usr/bin/gdb-multiarch: No such file or directory

From what I can tell, on Fedora 39 there is no gdb-multiarch. However, it is not needed and gdb works just fine for debugging Spade.

To Reproduce
Run the gardenshed script with the start-debugger command while in the spade directory on Fedora Workstation 39.

Expected behavior
I expected GDB to launch.

Actual behavior
An error is thrown and the script exits.