MNT: Update CLA
MNT: Update CLA

MetPy is not a legal entity, so we need to use the UCAR/Unidata CLA
instead.

jrleeman/MetPy,ahaberlie/MetPy,jrleeman/MetPy,ahaberlie/MetPy,Unidata/MetPy,Unidata/MetPy,dopplershift/MetPy,ShawnMurd/MetPy,dopplershift/MetPy