Update codecov workflow and actions

[awvwgk]

• move config to .codecov.yml
• update all actions versions

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 45.21%. Comparing base (3a50cbd) to head (43b47f6). Report is 4 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #61 +/- ## ========================================== - Coverage 48.63% 45.21% -3.43% ========================================== Files 34 25 -9 Lines 3707 2665 -1042 Branches 1518 1081 -437 ========================================== - Hits 1803 1205 -598 + Misses 1207 1119 -88 + Partials 697 341 -356 ```

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