readme: ipdate logo v2

Author: bilelmoussaoui

README.md

@@ -4,7 +4,7 @@
 
 Build and deploy your Flatpak application using GitHub Actions
 
-<img src="https://user-images.githubusercontent.com/15098724/55282117-f8253380-52fa-11e9-95a3-ccae83b23034.png" alt="Flatpak logo" />
+<img src="https://github.com/flatpak/flatpak/raw/main/flatpak.png?raw=true" alt="Flatpak logo" />
 
 ![CI](https://github.com/flatpak/flatpak-github-actions/workflows/CI/badge.svg)