[MAINT] split format checking and testing in CI

[Remi-Gau]

• closes #552
• adds dependatbot

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a3a6125) 88.63% compared to head (5326b34) 88.63%. Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #554 +/- ## ======================================= Coverage 88.63% 88.63% ======================================= Files 11 11 Lines 1021 1021 ======================================= Hits 905 905 Misses 116 116 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.