In some cases, it may be necessary to check the version of the SSH package in vCenter Server, for example, when performing vulnerability checks using third-party solutions.
You can check ssh versions by the command in bash shell.
ssh -V
If there are any updates, they may also be mentioned in the release notes.
vCenter Server Update and Patch Release Notes
https://techdocs.broadcom.com/us/en/vmware-cis/vsphere/vsphere/8-0/release-notes/vcenter-server-update-and-patch-release-notes.html
If updates are required due to vulnerability checks performed by third-party solutions, it is not possible to update only the SSH package. the entire vCenter Server itself needs to be updated.