keeping the hosts up to date is no major upgrade - thats only patching. the hosts stay on 6.7, but with the latest patches. and the vmware-tools are one part of the patches.
but please patch the vcenter first
yes, I see the tools there, but how do I get them on the esxi server so I can push it out from vcenter? You can see that the "current" version is 10.3, so how do I get 11.x to be on the esxi server so it can be pushed from vcenter?
if you want to provide the actual tools without patching the hosts before you must put the tools on shared storage (same procedure for autodeployed hosts) :https://kb.vmware.com/s/article/2004018
therefor you must download the tools here: Download VMware vSphere
then put the extracted tools to a folder in the shared folder, go to the hosts advanced setting and set "UserVars.ProductLockerLocation" to this location