The Microsoft PowerToys Keyboard Manager tool should allow you to do this.
https://learn.microsoft.com/en-us/windows/powertoys/keyboard-manager
You will probably need admin access to install it, however.
Edit: Actually, apparently you don't? I just installed it on my work PC here, and did not get any UAC prompts or anything. It can indeed reassign your caps lock key -- I just tested this, and it works. (I mapped it to left ctrl.)