ci: refactor coverage upload, combine all coverage steps

[toadfanszz]

No description provided.

[codecov]

Codecov Report

Merging #143 (4b06342) into main (c3d74f3) will increase coverage by 0.05%.
Report is 1 commits behind head on main.
The diff coverage is n/a.

@@             Coverage Diff              @@
##               main     #143      +/-   ##
============================================
+ Coverage     57.51%   57.57%   +0.05%     
  Complexity        2        2              
============================================
  Files            81       81              
  Lines          2048     2046       -2     
  Branches        155      155              
============================================
  Hits           1178     1178              
+ Misses          826      824       -2     
  Partials         44       44              

see 1 file with indirect coverage changes

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