Bump paru from 0.4.1.2 to 0.4.2.1

Bumps [paru](https://github.com/htdebeer/paru) from 0.4.1.2 to 0.4.2.1.
- [Release notes](https://github.com/htdebeer/paru/releases)
- [Commits](https://github.com/htdebeer/paru/commits/0.4.2.1)

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

Gemfile.lock

@@ -6,7 +6,7 @@ GEM
     nokogiri (1.11.4)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
-    paru (0.4.1.2)
+    paru (0.4.2.1)
     racc (1.5.2)
 
 PLATFORMS