Bump nokogiri from 1.17.2 to 1.18.3 (#238)

Author: dependabot[bot]

Gemfile.lock

@@ -102,7 +102,7 @@ GEM
     nap (1.1.0)
     netrc (0.11.0)
     nkf (0.2.0)
-    nokogiri (1.17.2)
+    nokogiri (1.18.3)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     open4 (1.3.4)