fix: proper @jest/globals import (#530)

Author: jgoz

src/jest-globals.js

@@ -1,6 +1,6 @@
 /* istanbul ignore file */
 
-import globals from '@jest/globals'
+import {expect} from '@jest/globals'
 import * as extensions from './matchers'
 
-globals.expect.extend(extensions)
+expect.extend(extensions)