Update zio, zio-test, zio-test-sbt to 2.0.0-RC6

[scala-steward]

Updates

• dev.zio:zio
• dev.zio:zio-test
• dev.zio:zio-test-sbt

from 2.0.0-RC5 to 2.0.0-RC6.
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 = "dev.zio" } ]

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

dependencyOverrides = [{
  pullRequest = { frequency = "@monthly" },
  dependency = { groupId = "dev.zio" }
}]

labels: library-update, early-semver-pre-release, semver-spec-pre-release, commit-count:1

[codecov-commenter]

Codecov Report

Merging #317 (02d7088) into master (1f3b2e6) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #317   +/-   ##
=======================================
  Coverage   66.78%   66.78%           
=======================================
  Files          19       19           
  Lines         563      563           
  Branches       22       21    -1     
=======================================
  Hits          376      376           
  Misses        187      187           

Impacted Files	Coverage Δ
...n/scala/io/github/vigoo/clipp/zioapi/package.scala	75.86% <100.00%> (ø)

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