Catch lowercase states in location validator

[hursey013]

The lowercase states were throwing off the initial validation when trying to find the state in the object of zip codes.

[codecov]

Codecov Report

Merging #904 into develop will decrease coverage by 0.09%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           develop     #904     +/-   ##
==========================================
- Coverage    46.75%   46.66%   -0.1%     
==========================================
  Files          680      680             
  Lines        27427    27398     -29     
  Branches      3371     3372      +1     
==========================================
- Hits         12824    12785     -39     
- Misses       14242    14250      +8     
- Partials       361      363      +2

Flag	Coverage Δ
#backend	7.75% <ø> (-0.26%)	⬇️
#frontend	90.19% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
src/validators/location.js	74.54% <100%> (+0.23%)	⬆️
api/xml/xml.go	85.62% <0%> (-2.19%)	⬇️
api/location.go	0% <0%> (ø)	⬆️

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[apburnes]

Good catch 👍