Problem: merged pr-4432 broke FindSodium on linux

[bjornstromberg]

Solution: rename the FindSodium to Findsodium so it matches what the build script actually looks for. tested on ubuntu-20.04lts with cmake 3.16.

[bjornstromberg]

#4432 just to link these

[bjornstromberg]

the ci failure on the github actions ci is just a long running test that timed out
70/101 Test #70: test_security_curve ..............***Timeout 60.01 sec

on master
70/101 Test #70: test_security_curve .............. Passed 11.74 sec

that is a pretty bad change, is this normal on github actions that stuff times out?
thinking load on server could be a big factor since everything else seems to have passed.

and no code is actually changed just a filename..