Update dependency YamlDotNet to 12.3.1

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
YamlDotNet (source)	12.0.2 → 12.3.1

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Release Notes

aaubry/YamlDotNet (YamlDotNet)

v12.3.1: Release 12.3.1

• Merge pull request #​760 from EdwardCooke/ec-net70
  Added net7.0 to the nuspec file

v12.3.0: Release 12.3.0

• Merge pull request #​759 from EdwardCooke/ec-fix-757
  Allow braces in non-flows

• Merge pull request #​758 from EdwardCooke/ec-aot
  Static Object Context for Ahead of Time compiling and Trimmed libraries

v12.2.1: Release 12.2.1

• Merge pull request #​750 from nuttytree/f/throw-exception-for-non-unique-keys
  Throw an exception on duplicate keys

v12.2.0: Release 12.2.0

• Merge pull request #​722 from EdwardCooke/ec-712-privateconstructor
  Allow parameterless private constructors when enabled

v12.1.0: Release 12.1.0

• Merge pull request #​728 from marshall777/patch-1
  Correction of LowerCaseNamingConvention documentation

• Merge pull request #​711 from adamralph/upgrade-bullseye
  upgrade Bullseye from 3.6.0 to 4.0.0

• Merge pull request #​735 from adamralph/bullseye-public-only
  updated Bullseye from 4.0.0 to 4.2.0

• Merge pull request #​747 from polterguy/issue-746
  Allow setting the newline character when serializing

• Add required dot net core versions to the workflow

• Revert Bullseye to fix release issues
  It was incorrectly detecting AppVeyor as the host

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