refactor: use test

packages/backend/test/prelude/maybe.ts

@@ -2,17 +2,17 @@ import * as assert from 'assert';
 import { just, nothing } from '../../src/misc/prelude/maybe.js';
 
 describe('just', () => {
-	it('has a value', () => {
+	test('has a value', () => {
 		assert.deepStrictEqual(just(3).isJust(), true);
 	});
 
-	it('has the inverse called get', () => {
+	test('has the inverse called get', () => {
 		assert.deepStrictEqual(just(3).get(), 3);
 	});
 });
 
 describe('nothing', () => {
-	it('has no value', () => {
+	test('has no value', () => {
 		assert.deepStrictEqual(nothing().isJust(), false);
 	});
 });