Update sbt-scalafix to 0.12.0

[scala-steward]

About this PR

📦 Updates ch.epfl.scala:sbt-scalafix from 0.11.1 to 0.12.0

📜 GitHub Release Notes - Version Diff

Usage

✅ Please merge!

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention me in the comments below.

Configure Scala Steward for your repository with a .scala-steward.conf file.

Have a fantastic day writing Scala!

⚙ Adjust future updates

Add this to your `.scala-steward.conf` file to ignore future updates of this dependency: ``` updates.ignore = [ { groupId = "ch.epfl.scala", artifactId = "sbt-scalafix" } ] ``` Or, add this to slow down future updates of this dependency: ``` dependencyOverrides = [{ pullRequests = { frequency = "30 days" }, dependency = { groupId = "ch.epfl.scala", artifactId = "sbt-scalafix" } }] ```

^{labels: sbt-plugin-update, early-semver-major, semver-spec-minor, commit-count:1}

[codecov-commenter]

Codecov Report

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

Project coverage is 89.69%. Comparing base (464917d) to head (f8aac98).

:exclamation: Current head f8aac98 differs from pull request most recent head c507ebf. Consider uploading reports for the commit c507ebf to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #1168 +/- ## =========================================== + Coverage 89.50% 89.69% +0.18% =========================================== Files 124 124 Lines 10028 10028 Branches 782 782 =========================================== + Hits 8976 8995 +19 + Misses 1052 1033 -19 ```

:umbrella: View full report in Codecov by Sentry.
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[scala-steward]

Superseded by #1171.