add more responsiveness when updating self admin

src/lib/server/database.ts

@@ -55,7 +55,7 @@ export class Admin extends Model {
 	@BeforeCreate
 	@BeforeUpdate
 	static hashPassword(instance: Admin) {
-		if (instance.password != null) {
+		if ((instance.changed() || []).indexOf('password') != -1) {
 			instance.password = bcrypt.hashSync(instance.password, 10);
 		}
 	}