chore: fix deprecation warning with Node.js 16 imports

[mxschmitt]

This isn't a quick-one, with a change we probably break previous Node.js versions. For reference

• Update package.json: changed pattern "./" to "./*" tslib#135 (comment)
• DeprecationWarning: Use of deprecated folder mapping "./" in the "exports" field module resolution of the package at G:\SNWS\sn-micro-front-web-project-template\node_modules\postcss\package.json. postcss/postcss#1455 (they made the change and then reverted. Its still persistent for them)

Fixes #6026

See here #6026 (comment) for reproducible steps.

[mxschmitt]

Closing for now, nobody reported any issues.