chore(deps): update dependency nokogiri to v1.15.4

Author: renovate[bot]

Gemfile.lock

@@ -46,7 +46,7 @@ GEM
     image_size (3.2.0)
     in_threads (1.6.0)
     method_source (1.0.0)
-    mini_portile2 (2.8.2)
+    mini_portile2 (2.8.4)
     minitest (5.18.1)
     multi_json (1.15.0)
     mustermann (3.0.0)
@@ -55,7 +55,7 @@ GEM
       net-ssh (>= 5.0.0, < 8.0.0)
     net-ssh (7.0.1)
     newrelic_rpm (8.16.0)
-    nokogiri (1.15.3)
+    nokogiri (1.15.4)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     options (2.3.2)