As an IT Infrastructure Manager,
I want the PRTG auto-update process to automatically verify that the required code signing certificates are present and trusted on my system before downloading and attempting to install a new version,
so that updates do not fail silently or leave my PRTG services in a non-starting state due to an untrusted certificate chain.

Background:
The auto-update should have a precursor "check the certificates" step instead of downloading an invalid installer or if we do install, the services won't start since the certificates are not within the trust store.
In the PRTG versions 104, 114 and 118, the installer has different code signing certificates. This causes the auto-update to fail and not until it fails do you find that there is a new certificate chain to contend with.