Use new native .env Node.js support

[davlgd]

Node.js 21.7 introduces env vars parsing and .env native support, multiline included. We could use this in a future release to simplify our codebase https://github.com/nodejs/node/blob/main/doc/changelogs/CHANGELOG_V21.md#loading-and-parsing-environment-variables

[miton18]

In which component / step do you want to use it ?

[davlgd]

For env var parsing at clever env import, as it's native with multiline support ?