chore: save validation

internal/pkg/validation/validation.go

@@ -10,7 +10,7 @@ import (
 var defaultValidator = validator.New()
 
 // Struct validates s and returns the first validation error as a readable message, or nil.
-func Struct(s interface{}) error {
+func Struct(s any) error {
 	err := defaultValidator.Struct(s)
 	if err == nil {
 		return nil
@@ -23,7 +23,7 @@ func Struct(s interface{}) error {
 }
 
 // Var validates a single value with the given tag (e.g. "required") and returns an error or nil.
-func Var(field interface{}, tag string) error {
+func Var(field any, tag string) error {
 	err := defaultValidator.Var(field, tag)
 	if err == nil {
 		return nil