I've just downloaded a fresh copy of Eclipse Version: 2022-09 (4.25.0) Build id: 20220908-1902 and fired up the Marketplace client to install Spring Tools 4 (4.16.0.RELEASE).
Edit: I should add that I used the same workspace as the previous version and chose to convert it for the latest version when prompted
I clicked "Install" and kept only the required features and then clicked "Confirm" and accepted the license agreements, then clicked "Finish".
While waiting for it to download and install, a "Trust" dialog popped up saying the two items have expired. One is "Pivotal R&D" and the other is "Pivotal ", they expired back in 2020 and 2018, respectively.
A Google search did not turn up similar issues reported by anyone. I'm not behind any firewall, proxy, or VPN. I would like to know how to proceed with the install without having to trust these expired certificates. Dialog showing expired certificates