Why does text mesh pro keep littering my git log?

My team members and I are constantly getting these uncommitted, modified package files popping up in our git branches. I have seen these pop up for me upon just checking out my branch.

These problems started when we had to downgrade our Unity version from 2019.3 to 2019.1, and I have been unable to resolve them since. I have tried making a fresh project, re-importing the assets folder, and pointing the master to that new project. No luck.