Update codecov/codecov-action action to v3

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
codecov/codecov-action	action	major	v1 -> v3

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Release Notes

codecov/codecov-action

v3

Compare Source

v2

Compare Source

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Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ 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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• If you want to rebase/retry this PR, click this checkbox.

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This PR has been generated by Mend Renovate. View repository job log here.

[codecov]

Codecov Report

Merging #14 (38e3fc5) into master (9754f8b) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master      #14   +/-   ##
=======================================
  Coverage   99.18%   99.18%           
=======================================
  Files           5        5           
  Lines         123      123           
=======================================
  Hits          122      122           
  Misses          1        1           

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