Use node: for Node.js builtin modules

Use the the `node:` protocol when importing Node.js builtin modules
and enable rule in eslint to enforce.

The `node:` protocol for Node.js builtin modules has been available
since Node.js v14.

See: https://github.com/import-js/eslint-plugin-import/blob/main/docs/rules/enforce-node-protocol-usage.md

cypress/plugins/index.ts

@@ -1,4 +1,4 @@
-const fs = require('fs');
+const fs = require('node:fs');
 
 // These two global variables are used to store information about the REST API used
 // by these e2e tests. They are filled out prior to running any tests in the before()