Update sbt-typelevel, sbt-typelevel-site to 0.4.20

[typelevel-steward]

Updates

• org.typelevel:sbt-typelevel
• org.typelevel:sbt-typelevel-site

from 0.4.19 to 0.4.20.
GitHub Release Notes - 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.

Configure Scala Steward for your repository with a .scala-steward.conf file.

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.typelevel" } ]

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

dependencyOverrides = [{
  pullRequests = { frequency = "30 days" },
  dependency = { groupId = "org.typelevel" }
}]

labels: sbt-plugin-update, early-semver-minor, semver-spec-patch, version-scheme:early-semver, commit-count:1

[codecov-commenter]

Codecov Report

Merging #534 (a751f5d) into master (881a5e1) will not change coverage.
The diff coverage is n/a.

❗ Current head a751f5d differs from pull request most recent head da292c9. Consider uploading reports for the commit da292c9 to get more accurate results

@@           Coverage Diff           @@
##           master     #534   +/-   ##
=======================================
  Coverage   99.06%   99.06%           
=======================================
  Files           8        8           
  Lines         426      426           
  Branches       77       77           
=======================================
  Hits          422      422           
  Misses          4        4           

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