Update tut-plugin to 0.6.13

[scala-steward]

Updates org.tpolecat:tut-plugin from 0.6.12 to 0.6.13.

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 = "org.tpolecat", artifactId = "tut-plugin" } ]

labels: semver-patch

[codecov-io]

Codecov Report

Merging #3094 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #3094   +/-   ##
=======================================
  Coverage   93.49%   93.49%           
=======================================
  Files         368      368           
  Lines        6983     6983           
  Branches      195      195           
=======================================
  Hits         6529     6529           
  Misses        454      454

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