Update nokogiri to fix Devcontainer smoke test

https://github.com/rails/rails/actions/runs/12766195933/job/35582029003#step:4:38

Author: kamipo

Gemfile.lock

@@ -399,12 +399,12 @@ GEM
       net-protocol
     net-ssh (7.3.0)
     nio4r (2.7.3)
-    nokogiri (1.17.1)
+    nokogiri (1.18.1)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.17.1-x86_64-darwin)
+    nokogiri (1.18.1-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.17.1-x86_64-linux)
+    nokogiri (1.18.1-x86_64-linux-gnu)
       racc (~> 1.4)
     os (1.1.4)
     ostruct (0.6.0)