Split coverage upload of CI test workflow to separate jobs

[make-github-pseudonymous-again]

Fixes #862.

[codecov[bot]]

Codecov Report

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

Project coverage is 64.44%. Comparing base (5aecfb7) to head (715e7a2).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #879 +/- ## ========================================== - Coverage 64.47% 64.44% -0.04% ========================================== Files 703 703 Lines 9705 9705 Branches 1335 1335 ========================================== - Hits 6257 6254 -3 - Misses 3003 3004 +1 - Partials 445 447 +2 ``` | [Flag](https://app.codecov.io/gh/infoderm/patients/pull/879/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=infoderm) | Coverage Δ | | |---|---|---| | [test](https://app.codecov.io/gh/infoderm/patients/pull/879/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=infoderm) | `69.72% <ø> (-0.06%)` | :arrow_down: | | [test-app](https://app.codecov.io/gh/infoderm/patients/pull/879/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=infoderm) | `53.73% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=infoderm#carryforward-flags-in-the-pull-request-comment) to find out more.

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