MNT: Tweak test profile
MNT: Tweak test profile

With changes to LFC calculation to use a profile that includes the LCL,
the old data does not match the test case of an uncapped sounding. Tweak
a temperature to get back to that case, since that's what we want to
test here.

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