HR upload field renaming & OM quality check

[AlisonLanski]

Addresses IPEDS change from names like RACEETHNICITYGENDER to RACEETHNICITYSEX. Also adds a quality check to prep_om that looks for the common error of including multiple degree levels per person per time period, which addresses #139

[AlisonLanski]

the automated check fail seems to be based on a server issue for the macos tester. (it can't create a necessary connection), so I'm ok with that for now. Others are working fine as is a manual mac os check for mac_release.

[codecov-commenter]

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Codecov Report

❌ Patch coverage is 90.00000% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 69.90%. Comparing base (cb7a2aa) to head (06a7c9b).

Files with missing lines	Patch %	Lines
R/prep_om_data_frame.R	66.66%	1 Missing ⚠️
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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #140      +/-   ##
==========================================
- Coverage   69.90%   69.90%   -0.01%     
==========================================
  Files          75       75              
  Lines        3064     3067       +3     
==========================================
+ Hits         2142     2144       +2     
- Misses        922      923       +1     

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