refactor: usage of node:test instead of tap

.taprc

@@ -1,8 +0,0 @@
-ts: false
-jsx: false
-flow: false
-check-coverage: false
-coverage: false
-
-files:
-  - 'test/**/*.test.js'

test/basic.test.js

@@ -1,9 +1,11 @@
-const tap = require('tap')
+const test = require('node:test')
+const assert = require('node:assert/strict')
+
 const { markdownlint } = require('markdownlint').promises
 
 const relativeLinks = require('../src/index.js')
 
-tap.test('ensure we validate correctly', async (t) => {
+test('ensure we validate correctly', async () => {
   const lintResults = await markdownlint({
     files: ['test/fixtures/Valid.md', 'test/fixtures/Invalid.md'],
     config: {
@@ -11,23 +13,23 @@ tap.test('ensure we validate correctly', async (t) => {
     },
     customRules: [relativeLinks]
   })
-  t.equal(lintResults['test/fixtures/Valid.md'].length, 0)
-  t.equal(lintResults['test/fixtures/Invalid.md'].length, 2)
+  assert.equal(lintResults['test/fixtures/Valid.md'].length, 0)
+  assert.equal(lintResults['test/fixtures/Invalid.md'].length, 2)
 
-  t.equal(
+  assert.equal(
     lintResults['test/fixtures/Invalid.md'][0]?.ruleDescription,
     'Relative links should be valid'
   )
-  t.equal(
+  assert.equal(
     lintResults['test/fixtures/Invalid.md'][0]?.errorDetail,
     'Link "./basic.test.js" is dead'
   )
 
-  t.equal(
+  assert.equal(
     lintResults['test/fixtures/Invalid.md'][1]?.ruleDescription,
     'Relative links should be valid'
   )
-  t.equal(
+  assert.equal(
     lintResults['test/fixtures/Invalid.md'][1]?.errorDetail,
     'Link "../image.png" is dead'
   )