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 #27 (52e2b87) into master (4d834a7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #27   +/-   ##
=======================================
  Coverage   52.40%   52.40%           
=======================================
  Files           4        4           
  Lines         208      208           
=======================================
  Hits          109      109           
  Misses         76       76           
  Partials       23       23           

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