Fix type hint for new mypy version

[schlunma]

Description

Closes #2496

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[codecov[bot]]

Codecov Report

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

Project coverage is 94.70%. Comparing base (56e1203) to head (655495e).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2497 +/- ## ======================================= Coverage 94.70% 94.70% ======================================= Files 249 249 Lines 14114 14114 ======================================= Hits 13367 13367 Misses 747 747 ```

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