Update cats-effect, cats-effect-kernel, ... to 3.5.6

[scala-steward]

About this PR

📦 Updates

• org.typelevel:cats-effect
• org.typelevel:cats-effect-kernel
• org.typelevel:cats-effect-laws
• org.typelevel:cats-effect-std
• org.typelevel:cats-effect-testkit

from 3.5.4 to 3.5.6

📜 GitHub Release Notes - Version Diff

Usage

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^{labels: library-update, early-semver-patch, semver-spec-patch, version-scheme:early-semver, commit-count:1}

[what-the-diff]

PR Summary

• Upgraded Cats Effect Library
  The version of the Cats Effect library utilized in the project has been updated from 3.5.4 to 3.5.6. This upgrade ensures we are utilizing the latest features, improvements, and potential bug fixes provided in the new version.

[scala-steward]

Superseded by #394.