test_controller test fails on python 3.13/gdb 14.2

[farchord]

Describe the bug
Fedora's currently doing a mass rebuild against python 3.13, and the test_controller test seems to fail upon building.

To Reproduce
Make sure you are using gdb 14.2 and python 3.13 to build

Please complete the following information:

• OS: Fedora Rawhide
• pygdbmi version (pip freeze output): 0.11.0

You can find the relevant build log here: https://kojipkgs.fedoraproject.org//work/tasks/614/118870614/build.log

[hroncok]

python 3.13 is not needed, the failure happens with python 3.12 as well.