[2.3.0] Checkmk Werk 16863 created: proxmox: Fix log parsing crash for Proxmox versions 3.2.4 and newer

[//]: # (werk v2) # proxmox: Fix log parsing crash for Proxmox versions 3.2.4 and newer key | value ---------- | --- compatible | yes version | 2.3.0p9 date | 2024-06-28T14:34:01+00:00 level | 1 class | fix component | checks edition | cre The backup log format changed in Proxmox version 3.2.4 which resulted in a crash in the Proxmox special agent. The special agent can now handle both old and the new format of backup log messages.