Consistency of validation error messages

[chibacchie]

What version of Ajv you are you using?

v8.17.1

What problem do you want to solve?

It may be better to keep error messages consistent in terms of expression/format. More specifically, I found a minor issue that properties in dependency errors are not enclosed with quotes (like must have properties X when property Y is present) while required properties are enclosed like must have property 'X'.

What do you think is the correct solution to problem?

Enclose properties with quotes in the case of dependency errors.

Will you be able to implement it?

I plan to make a PR.