Bump libxml-ruby

This fixes bundle install when using libxml2 2.12.0

Author: Earlopain

Gemfile.lock

@@ -310,7 +310,7 @@ GEM
       activesupport (>= 6.0.0)
       redis (>= 4.2, < 6)
     language_server-protocol (3.17.0.3)
-    libxml-ruby (4.1.2)
+    libxml-ruby (5.0.0)
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)