Prevent race condition in workflows

[codecov-commenter]

Codecov Report

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

Project coverage is 65.95%. Comparing base (a6e1d4e) to head (c5ceb03).

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Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1343 +/- ## ======================================= Coverage 65.95% 65.95% ======================================= Files 50 50 Lines 8209 8209 Branches 962 962 ======================================= Hits 5414 5414 Misses 2795 2795 ``` | [Flag](https://app.codecov.io/gh/dunst-project/dunst/pull/1343/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dunst-project) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/dunst-project/dunst/pull/1343/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=dunst-project) | `65.95% <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=dunst-project#carryforward-flags-in-the-pull-request-comment) to find out more.

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