ci: Change dotnet formatter

[askpt]

This PR

• This PR changes the code formatter we currently use to the new built-in in the SDK. See https://learn.microsoft.com/en-us/dotnet/core/tools/dotnet-format

Notes

• We should now use this tool since it is now shipped as part of the dotnet SDK, removing the need to install an external one.
• As pointed out in the chat, this build runs in parallel and is relatively fast. I will enable all PRs instead of those focusing on changes to .cs files.

[codecov[bot]]

Codecov Report

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

Project coverage is 95.40%. Comparing base (11a0333) to head (26c6dd7). Report is 1 commits behind head on main.

:exclamation: Current head 26c6dd7 differs from pull request most recent head 1343a3c. Consider uploading reports for the commit 1343a3c to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #260 +/- ## ======================================= Coverage 95.40% 95.40% ======================================= Files 27 27 Lines 1111 1111 Branches 120 120 ======================================= Hits 1060 1060 Misses 34 34 Partials 17 17 ```

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