Update sbt-dotty to 0.5.0

[scala-steward]

Updates ch.epfl.lamp:sbt-dotty from 0.4.6 to 0.5.0.

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

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Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "ch.epfl.lamp", artifactId = "sbt-dotty" } ]

labels: sbt-plugin-update, semver-minor

[SethTisue]

offhand, the failure here appears real — the code needs to be updated, given syntax changed

but I do wonder if it's actually related to the sbt-dotty version bump, or whether it's simply that the PR validation run happened to pick up a newer nightly in which support for an old syntax was dropped

volunteer to dig deeper?

[SethTisue]

#46