Update codecov/codecov-action action to v2

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v1 -> v2

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Release Notes

codecov/codecov-action

v2

Compare Source

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Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[codecov]

Codecov Report

Merging #26 (490664a) into master (7176d8a) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #26   +/-   ##
=======================================
  Coverage   61.53%   61.53%           
=======================================
  Files           2        2           
  Lines          52       52           
=======================================
  Hits           32       32           
  Misses         20       20           

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