Update pprint to 0.9.4

[scala-center-steward]

About this PR

📦 Updates com.lihaoyi:pprint from 0.9.0 to 0.9.4

📜 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 = "com.lihaoyi", artifactId = "pprint" } ]

Or, add this to slow down future updates of this dependency:

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "com.lihaoyi", artifactId = "pprint" }
}]

^{labels: library-update, early-semver-minor, semver-spec-patch, commit-count:1}

[danicheg]

CI is failing with

[error] java.lang.RuntimeException: Expected `plugin / scalaVersion` to be 2.13.15 or later, but found 2.13.14.
[error] To support backwards-only binary compatibility (SIP-51), the Scala 2.13 compiler
[error] should not be older than scala-library on the dependency classpath.
[error] 
[error] Upgrade the `scalaVersion` to fix the build. If upgrading the Scala compiler version is
[error] not possible (for example due to a regression in the compiler or a missing dependency),
[error] this error can be demoted by setting `allowUnsafeScalaLibUpgrade := true`.
[error] 
[error] See `plugin / evicted` to know why scala-library 2.13.15 is getting pulled in.

So there are two options — either give up on pprint or drop support for older scalac versions. Will evaluate both options. Maybe giving up on pprint is achievable.

[lrytz]

Another option is to stay on the old pprint version, or even make the pprint version depend on the Scala version.

The SIP-51 restriction seems to be fine generally, but it is really annoying for compiler plugins using dependencies that want to back-publish new releases for old Scala versions.