Update check_running_kernel

Add Proxmox VE 8.1 support

Author: thorstenspille

running-kernel/check_running_kernel

@@ -34,6 +34,7 @@ if [[ "$uname" == *"-pve" ]]; then
     if [[ "$(lsb_release -cs  2> /dev/null)" == "bookworm" ]]; then
         if [[ "$major-version" == "6.5" ]]; then
             filter="proxmox-kernel-${major_version}.*-signed"
+            uname=${uname}-signed
         else
             filter="proxmox-kernel-${major_version}"
         fi