Update codecov/codecov-action action to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v2 -> v3

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Release Notes

codecov/codecov-action

v3

Compare Source

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Configuration

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[codecov]

Codecov Report

Merging #236 (ccf4fe1) into master (3a5e43b) will increase coverage by 3.22%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master     #236      +/-   ##
==========================================
+ Coverage   90.32%   93.54%   +3.22%     
==========================================
  Files           1        1              
  Lines          31       31              
  Branches       10       10              
==========================================
+ Hits           28       29       +1     
+ Misses          2        1       -1     
  Partials        1        1              

Impacted Files	Coverage Δ
index.js	93.54% <0.00%> (+3.22%)	⬆️

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