Update nokogiri to version 1.18.9

Author: depfu[bot]

Gemfile.lock

@@ -107,11 +107,11 @@ GEM
     mercenary (0.4.0)
     method_source (1.1.0)
     metrics (0.12.2)
-    nokogiri (1.18.8-arm64-darwin)
+    nokogiri (1.18.9-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.8-x64-mingw-ucrt)
+    nokogiri (1.18.9-x64-mingw-ucrt)
       racc (~> 1.4)
-    nokogiri (1.18.8-x86_64-linux-gnu)
+    nokogiri (1.18.9-x86_64-linux-gnu)
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)