fix packaging

Author: MoAlyousef

packaging/linux/appimage/create_appdir.sh

@@ -10,7 +10,7 @@ BIN="$BUILD_DIR/release/diskfmt"
 DESKTOP_FILE="$SCRIPT_DIR/diskfmt.desktop"
 ICON_SRC="${ICON_SRC:-$ROOT_DIR/assets/icon.png}"
 ARCH="${ARCH:-$(uname -m)}"
-VERSION="${VERSION:-$(grep -m1 '^version' "$ROOT_DIR/Cargo.toml" | cut -d '\"' -f2)}"
+VERSION="${VERSION:-$(awk -F '\"' '/^version[[:space:]]*=/{print $2; exit}' "$ROOT_DIR/Cargo.toml")}"
 METADATA_FILE="$ROOT_DIR/packaging/linux/diskfmt.metainfo.xml"
 LINUXDEPLOY="${LINUXDEPLOY:-$APPIMAGE_DIR/linuxdeploy-${ARCH}.AppImage}"
 APPIMAGETOOL="${APPIMAGETOOL:-$APPIMAGE_DIR/appimagetool-${ARCH}.AppImage}"