sysutils/slurm-wlm: Update to 23.11.6

• Take maintainership

ChangeLog:
https://www.schedmd.com/slurm-version-23-11-5-is-now-available-2/
https://www.schedmd.com/slurm-version-23-11-5-is-now-available/
https://www.schedmd.com/slurm-version-23-11-4-is-now-available/
https://www.schedmd.com/slurm-version-23-11-3-is-now-available/
https://www.schedmd.com/slurm-version-23-11-2-is-now-available/

MFH: 2024Q2 (bugfixes)