fix: install xdg-utils in Linux release deps

The Linux bundle step failed with 'xdg-open binary not found' because
xdg-utils was not installed. Tauri needs /usr/bin/xdg-open to build the
.deb bundle.

.gitea/workflows/release.yml

@@ -44,7 +44,7 @@ jobs:
       - name: Install Linux dependencies
         run: |
           sudo apt-get update
-          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf
+          sudo apt-get install -y libwebkit2gtk-4.1-dev libappindicator3-dev librsvg2-dev patchelf xdg-utils
 
       - name: Set up Bun
         uses: oven-sh/setup-bun@v2