chore: Fix Double Logo on Pub.dev

[tomarra]

Description

We have this fixed for Very Good CLI so need to carry that over here. Found when doing an update to the Dart Frog CLI, https://pub.dev/packages/dart_frog_cli

Requirements

• No functional changes to the code
• The publish to pub.dev only has 1 logo shown.

[tomarra]

Can follow what we did here https://github.com/VeryGoodOpenSource/very_good_cli/blob/main/README.md?plain=1