Update scala3-library to 3.2.1

[scala-steward]

Updates org.scala-lang:scala3-library from 3.2.0 to 3.2.1.
GitHub Release Notes - Version Diff - Version Diff

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.

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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 = "org.scala-lang", artifactId = "scala3-library" } ]

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

dependencyOverrides = [{
  pullRequests = { frequency = "@monthly" },
  dependency = { groupId = "org.scala-lang", artifactId = "scala3-library" }
}]

labels: library-update, early-semver-patch, semver-spec-patch, commit-count:1

[SethTisue]

functional-tests/runMain com.typesafe.tools.mima.lib.UnitTests -3 is failing

scala/scala3#15707 seems a likely culprit

The following problem(s) were reported but not expected (2):
+method foo()Int in class A is declared final in new version
+method foo_=(Int)Unit in class A is declared final in new version
- ✗  3 / class-var-becomes-final-nok: com.typesafe.tools.mima.lib.CollectProblemsTest$$anon$1: CollectProblemsTest failure

[SethTisue]

Ah, it's a progression, so we just needed to adjust the expected output.