Remove dependencies of unmaintained forks:

[evanlouie]

• github.com/timfpark/conjungo
  • github.com/imdario/mergo should work
• github.com/timfpark/yaml
  • gopkg.in/yaml.v3 should work
• Write tests based on existing packages and ensure still pass after swap out

[andrewDoing]

After some investigation, neither of the proposed libraries can replace the same functionality without modification.

mergo: The mergo.Merge function can't replace conjungo.Merge because the current config gets overwritten in case of a conflict.
Edit: The use of a transform function that avoids overwriting zero-value booleans could be developed.

gopkg.in/yaml.v2: The defaultMapType is hardcoded and cannot be overwritten, which appears to be the purpose of forking the repo.