chore(deps): bump github.com/kedacore/keda/v2 from 2.17.1-0.20250708210620-a239d2459a35 to 2.18.0 in /plugins/scheduler-k3s

chore(deps): bump github.com/kedacore/keda/v2 from 2.17.1-0.20250708210620-a239d2459a35 to 2.18.0 in /plugins/scheduler-k3s #6601