Fix dark mode

[MiguelAFH]

Fix dark mode

♻️ Current situation & Problem

Dark mode doesn't work well on the report cards

⚙️ Release Notes

Added support for dark mode on the report cards.

📚 Documentation

✅ Testing

📝 Code of Conduct & Contributing Guidelines

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• I agree to follow the Code of Conduct and Contributing Guidelines.

[EthanRakutoBell]

Good fix, well done Miguel

[jennleww]

Great fix, can now add to documentation!

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.90%. Comparing base (1d634be) to head (d453fdb).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #57      +/-   ##
==========================================
+ Coverage   72.86%   72.90%   +0.04%     
==========================================
  Files          33       33              
  Lines        2074     2077       +3     
==========================================
+ Hits         1511     1514       +3     
  Misses        563      563              

Files with missing lines	Coverage Δ
CoughSync/Report/ReportCard.swift	100.00% <100.00%> (ø)

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