Bump xdg from 8.3.0 to 8.4.0

Bumps [xdg](https://github.com/bkuhlmann/xdg) from 8.3.0 to 8.4.0.
- [Commits](bkuhlmann/xdg@8.3.0...8.4.0)

---
updated-dependencies:
- dependency-name: xdg
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

Gemfile.lock

@@ -453,7 +453,7 @@ GEM
       activesupport
       mechanize (~> 2.8.5)
       rest-client
-    xdg (8.3.0)
+    xdg (8.4.0)
     xpath (3.2.0)
       nokogiri (~> 1.8)
     zeitwerk (2.6.14)