Update Lua documentation (5.5.0)

Author: simon04

lib/docs/scrapers/lua.rb

@@ -11,10 +11,15 @@ class Lua < UrlScraper
     options[:skip_links] = true
 
     options[:attribution] = <<-HTML
-      &copy; 1994&ndash;2020 Lua.org, PUC-Rio.<br>
+      &copy; 1994&ndash;2025 Lua.org, PUC-Rio.<br>
       Licensed under the MIT License.
     HTML
 
+    version '5.5' do
+      self.release = '5.5.0'
+      self.base_url = 'https://www.lua.org/manual/5.4/'
+    end
+
     version '5.4' do
       self.release = '5.4.1'
       self.base_url = 'https://www.lua.org/manual/5.4/'