Bump YamlDotNet from 15.1.0 to 15.1.2 in /src/routingmanager.tests

[dependabot[bot]]

Bumps YamlDotNet from 15.1.0 to 15.1.2.

Release notes

Sourced from YamlDotNet's releases.

Release 15.1.2

• Merge pull request #912 from EdwardCooke/ec-732
  Fixed #732, quote strings starting with whitespace characters

Release 15.1.1

• Merge pull request #902 from EdwardCooke/ec-901
  Fixed #901 - private constructor and tag issue

Commits

• 7ae209b Quoted test changes to not log to stdout
• 33ed33b Merge pull request #912 from EdwardCooke/ec-732
• 66c68a2 Fixed #732, quote strings starting with whitespace characters
• 19d7875 Merge pull request #902 from EdwardCooke/ec-901
• b735083 Fixed #901 - private constructor and tag issue
• See full diff in compare view

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