feat!: bump engines to Node.js >=22.12.0 (#139)

BREAKING CHANGE: Requires Node.js v22.12.0 LTS or higher. ESM-only.

test/sha.spec.ts

@@ -1,11 +1,12 @@
-import * as path from 'path';
+import path from 'node:path';
 
-import { sha } from '../src/sha';
-import { describe, expect, it } from '@jest/globals';
+import { describe, expect, it } from 'vitest';
+
+import { sha } from '../src/sha.js';
 
 describe('sha', () => {
   it('should correctly hash a file', async () => {
-    expect(await sha(path.resolve(__dirname, 'fixtures', 'tohash'))).toEqual(
+    expect(await sha(path.resolve(import.meta.dirname, 'fixtures', 'tohash'))).toEqual(
       '12998c017066eb0d2a70b94e6ed3192985855ce390f321bbdb832022888bd251',
     );
   });