Fix build by pinning EVERYBEAM_COMMIT=v0.6.1. It requires casacore>v3.6. Since...

Fix build by pinning EVERYBEAM_COMMIT=v0.6.1. It requires casacore>v3.6. Since the latest casacore I can install on either ubuntu 22 or 24 is v3.5, I decided to limit everybeam instead