Switch to Ubunutu18.04

.github/workflows/appimage.yml

@@ -16,7 +16,7 @@ jobs:
     # The CMake configure and build commands are platform agnostic and should work equally well on Windows or Mac.
     # You can convert this to a matrix build if you need cross-platform coverage.
     # See: https://docs.github.com/en/free-pro-team@latest/actions/learn-github-actions/managing-complex-workflows#using-a-build-matrix
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-18.04
 
     steps:
     - uses: actions/checkout@v3
@@ -41,7 +41,7 @@ jobs:
       run: |
           wget https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
           wget https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
-          sudo apt-get install libfuse2
+          sudo apt-get install fuse libfuse2
           chmod +x linuxdeploy-x86_64.AppImage
           chmod +x linuxdeploy-plugin-qt-x86_64.AppImage