Sort generated deployment env by name

[antoniomacri]

I'm actually using dekorate via Quarkus Kubernetes extension.

The generated env in a deployment is shuffled every time the yaml is regenerated. This causes a problem since the manifest is not idempotent.

This is the issue on Quarkus: https://github.com/quarkusio/quarkus/issues/39167

Would it be possibile to preserve the ordering?