ci(mergify): upgrade configuration to current format

[codecov[bot]]

Codecov Report

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

Project coverage is 83.14%. Comparing base (e9373e6) to head (10741ee).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #891 +/- ## ======================================= Coverage 83.14% 83.14% ======================================= Files 22 22 Lines 4900 4900 Branches 1178 1178 ======================================= Hits 4074 4074 Misses 548 548 Partials 278 278 ```

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