fix ci

.github/workflows/flutter-build.yml

@@ -1476,12 +1476,13 @@ jobs:
       - name: Rename Binary
         run: |
           mv rustdesk-${{ env.VERSION }}-${{ matrix.job.arch }}.deb rustdesk-${{ env.VERSION }}.deb
-          sudo apt-get update -y
-          sudo apt-get install -y libarchive-tools
 
       - name: Build appimage package
         shell: bash
         run: |
+          # install libarchive-tools for bsdtar command used in AppImageBuilder.yml
+          sudo apt-get update -y
+          sudo apt-get install -y libarchive-tools
           # set-up appimage-builder
           pushd /tmp
           wget -O appimage-builder-x86_64.AppImage https://github.com/AppImageCrafters/appimage-builder/releases/download/v1.1.0/appimage-builder-1.1.0-x86_64.AppImage