Update index.js Refactor code to use import statements for module loa…

…ding.

Refactored the code to use modern module syntax. Replaced require statements with import statements, enhancing code compatibility with contemporary standards and improving readability.

tests/webpack/src/index.js

@@ -1,6 +1,5 @@
-/* eslint-disable @typescript-eslint/no-var-requires */
 /* eslint-disable no-console */
-const mermaid = require('mermaid');
+import mermaid from 'mermaid';
 import mindmap from '@mermaid-js/mermaid-mindmap';
 
 const render = async (graph) => {