Update sbt-mima-plugin to 0.6.3

[scala-steward]

Updates com.typesafe:sbt-mima-plugin from 0.6.1 to 0.6.3.

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.

Have a fantastic day writing Scala!

Ignore future updates

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

updates.ignore = [ { groupId = "com.typesafe", artifactId = "sbt-mima-plugin" } ]

labels: sbt-plugin-update, semver-patch

[codecov]

Codecov Report

Merging #726 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #726   +/-   ##
=======================================
  Coverage   94.22%   94.22%           
=======================================
  Files          62       62           
  Lines         762      762           
  Branches        7        7           
=======================================
  Hits          718      718           
  Misses         44       44

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