Update nokogiri to version 1.18.7

Author: depfu[bot]

Gemfile.lock

@@ -5,19 +5,19 @@ GEM
       opentracing (~> 0.3)
       thrift
     json (2.6.3)
-    mini_portile2 (2.8.0)
+    mini_portile2 (2.8.8)
     mustermann (1.1.1)
       ruby2_keywords (~> 0.0.1)
     nio4r (2.5.8)
-    nokogiri (1.13.6)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.18.7)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.13.6-x86_64-linux)
+    nokogiri (1.18.7-x86_64-linux-gnu)
       racc (~> 1.4)
     opentracing (0.5.0)
     puma (5.6.4)
       nio4r (~> 2.0)
-    racc (1.6.0)
+    racc (1.8.1)
     rack (2.2.3)
     rack-cors (1.1.1)
       rack (>= 2.0.0)