Merge pull request #177 from aunetx/hotfix/flatpak-build

Add Flathub remote to build artifacts workflow

.github/workflows/build-artifacts.yml

@@ -19,6 +19,7 @@ jobs:
         run: |
           sudo apt-get update
           sudo apt-get install -y flatpak-builder qemu-user-static binfmt-support
+          flatpak remote-add --if-not-exists flathub https://flathub.org/repo/flathub.flatpakrepo
           sudo snap install snapcraft --classic
 
       - name: install_deps