Fix macOS DMG build failing on spaces in volume name

Remove title field from DMG maker config to avoid unquoted
spaces in the hdiutil detach path. Defaults to the hyphenated
name field instead.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: rendyhd

forge.config.js

@@ -30,7 +30,6 @@ module.exports = {
       name: '@electron-forge/maker-dmg',
       config: {
         name: 'Vikunja-Quick-Entry',
-        title: 'Vikunja Quick Entry',
         icon: './assets/icon.icns',
       },
     },