Update tut-plugin to 0.6.9

[scala-steward]

Updates org.tpolecat:tut-plugin from 0.6.7 to 0.6.9.

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 @scala-steward in the comments below.

Have a nice day!

[codecov-io]

Codecov Report

Merging #2591 into master will increase coverage by 0.25%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #2591      +/-   ##
==========================================
+ Coverage    94.9%   95.16%   +0.25%     
==========================================
  Files         361      361              
  Lines        6615     6634      +19     
  Branches      277      294      +17     
==========================================
+ Hits         6278     6313      +35     
+ Misses        337      321      -16

Impacted Files	Coverage Δ
laws/src/main/scala/cats/laws/MonadLaws.scala	100% <0%> (ø)	⬆️
core/src/main/scala/cats/data/Ior.scala	98.54% <0%> (+0.01%)	⬆️
core/src/main/scala/cats/Eval.scala	98.82% <0%> (+0.04%)	⬆️
core/src/main/scala/cats/data/IorT.scala	97.79% <0%> (+0.04%)	⬆️
.../src/main/scala/cats/data/RepresentableStore.scala	87.5% <0%> (+4.16%)	⬆️
core/src/main/scala/cats/syntax/either.scala	99.26% <0%> (+12.5%)	⬆️
testkit/src/main/scala/cats/tests/CatsSuite.scala	70% <0%> (+36.66%)	⬆️

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