chore: update build appimage script (#5866)

* chore: update new appimage kit url

* chore: add error handling for appimagetool download

Author: Minh141120

src-tauri/build-utils/buildAppImage.sh

@@ -2,12 +2,9 @@
 APPIMAGETOOL="./.cache/build-tools/appimagetool"
 RELEASE_CHANNEL=${RELEASE_CHANNEL:-"stable"}
 
-# pull in AppImageTool if it's not pre cached
 mkdir -p ./.cache/build-tools
-if [ ! -f "${APPIMAGETOOL}" ]; then
-    wget https://github.com/AppImage/AppImageKit/releases/download/continuous/appimagetool-x86_64.AppImage -O "${APPIMAGETOOL}"
-    chmod +x "${APPIMAGETOOL}"
-fi
+wget https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage -O "${APPIMAGETOOL}" || { echo "Failed to download appimagetool."; exit 1; }
+chmod +x "${APPIMAGETOOL}"
 
 if [ "${RELEASE_CHANNEL}" != "stable" ]; then
     APP_DIR=./src-tauri/target/release/bundle/appimage/Jan-${RELEASE_CHANNEL}.AppDir