ci: Unpack Ubuntu runner artifacts

.github/workflows/build.yml

@@ -332,6 +332,15 @@ jobs:
     - name: Get release info
       run: |
         echo "XEMU_VERSION=$(cat XEMU_VERSION)" >> $GITHUB_ENV
+    - name: Extract Ubuntu artifacts
+      run: |
+        pushd dist/xemu-ubuntu-release
+        tar xvf xemu-ubuntu-release.tgz
+        popd
+
+        pushd dist/xemu-ubuntu-debug
+        tar xvf xemu-ubuntu-debug.tgz
+        popd
     - name: Publish release
       uses: softprops/action-gh-release@v1
       with:
@@ -345,8 +354,8 @@ jobs:
           dist/xemu-win-release/xemu-win-release.zip
           dist/xemu-macos-universal-release/xemu-macos-universal-release.zip
           dist/xemu-macos-universal-debug/xemu-macos-universal-debug.zip
-          dist/xemu-ubuntu-release/xemu-${{ env.XEMU_VERSION }}-x86_64.AppImage
-          dist/xemu-ubuntu-debug/xemu-${{ env.XEMU_VERSION }}-dbg-x86_64.AppImage
+          dist/xemu-ubuntu-release/xemu/xemu-${{ env.XEMU_VERSION }}-x86_64.AppImage
+          dist/xemu-ubuntu-debug/xemu/xemu-${{ env.XEMU_VERSION }}-dbg-x86_64.AppImage
 
   # Sync archive version of source (including submodule code) to the
   # ppa-snapshot branch to work around limitations of the Launchpad platform,