Update ci.yml

[vigyanhoon]

[stefan-niedermann]

Hello and thank you for the contribution.

Would you elaborate your changes please? I see no reason to put an unsigned prod build to the output artifacts...?

The app should never be used directly from GitHub if you are not a developer because

• It is unsigned and therefore a potential security risc
• It won't receive any automatic updates. Installing updates provided by an App store will fail to install due a different / missing certificate - also a potential security risc
• It can't be identified properly, while the debug build has a unique icon

Lookkng forward to your response 🙂

[Unpublished]

@vigyanhoon feel free to comment if you're still interested in this PR