fix appimage permissions on linux release

Author: HeliumAnt

.github/actions/bundle_release/action.yaml

@@ -24,6 +24,7 @@ runs:
     - name: Compress Linux Release
       shell: bash
       run: |
+        chmod +x "release/CortexCommand (Linux)/CortexCommand.AppImage"
         zip --must-match -j CortexCommand.linux.zip \
           "release/CortexCommand (Linux)/CortexCommand.AppImage" \
           external/lib/linux/x86_64/libfmod.so*