Update Codecov

[vintagepc]

Closes #330

Change to codecov action instead of manually invoking the bash uploader.

[codecov]

Codecov Report

Merging #331 (085abf9) into master (562b2ee) will increase coverage by 0.24%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #331      +/-   ##
==========================================
+ Coverage   90.40%   90.64%   +0.24%     
==========================================
  Files         151      152       +1     
  Lines        6834     7191     +357     
==========================================
+ Hits         6178     6518     +340     
- Misses        656      673      +17     

Impacted Files	Coverage Δ
parts/TelemetryHost.h	53.84% <0.00%> (-6.16%)	⬇️
parts/boards/EinsyRambo.cpp	96.55% <0.00%> (-0.58%)	⬇️
parts/components/PAT9125.cpp	84.50% <0.00%> (-0.46%)	⬇️
parts/components/GLHelper.cpp	85.00% <0.00%> (-0.42%)	⬇️
MK404.cpp	86.27% <0.00%> (-0.24%)	⬇️
utility/GLObj.cpp	92.93% <0.00%> (-0.21%)	⬇️
parts/components/w25x20cl.cpp	87.86% <0.00%> (-0.20%)	⬇️
parts/components/SDCard.cpp	93.73% <0.00%> (-0.14%)	⬇️
utility/Util.h	100.00% <0.00%> (ø)
utility/MK3SGL.h	100.00% <0.00%> (ø)
... and 68 more

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