[godot] GH action

.github/workflows/spine-godot.yml

@@ -209,7 +209,7 @@ jobs:
       - name: Make apt sources.list use the default Ubuntu repositories
         run: |
           sudo rm -f /etc/apt/sources.list.d/*
-          sudo cp -f misc/ci/sources.list /etc/apt/sources.list
+          sudo cp -f spine-godot/build/sources.list /etc/apt/sources.list
           sudo apt-get update
           
       - name: Set up Java 11

spine-godot/build/sources.lst

@@ -0,0 +1,4 @@
+deb http://archive.ubuntu.com/ubuntu/ focal main restricted universe multiverse
+deb http://archive.ubuntu.com/ubuntu/ focal-updates main restricted universe multiverse
+deb http://archive.ubuntu.com/ubuntu/ focal-security main restricted universe multiverse
+deb http://archive.ubuntu.com/ubuntu/ focal-backports main restricted universe multiverse