feature: add attribute message to enum validatiion

[fernandollisboa]

Resolves #3146

Make it possible to call enum validation with a custom message using message attribute:

  z.enum(['aaa', 'bbb', 'ccc'], { message: 'custom error message' });

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[colinhacks]

This has landed in Zod 3.23.

https://github.com/colinhacks/zod/releases/tag/v3.23.0