Update nokogiri for compatibility

Author: dhh

Gemfile.lock

@@ -86,17 +86,17 @@ GEM
     marcel (1.0.1)
     method_source (1.0.0)
     mini_mime (1.0.3)
-    mini_portile2 (2.8.0)
+    mini_portile2 (2.8.2)
     minitest (5.14.4)
     nio4r (2.5.7)
-    nokogiri (1.13.8)
-      mini_portile2 (~> 2.8.0)
+    nokogiri (1.15.2)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
-    nokogiri (1.13.8-arm64-darwin)
+    nokogiri (1.15.2-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.13.8-x86_64-darwin)
+    nokogiri (1.15.2-x86_64-darwin)
       racc (~> 1.4)
-    racc (1.6.0)
+    racc (1.7.1)
     rack (2.2.3)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)
@@ -147,9 +147,9 @@ GEM
     zeitwerk (2.4.2)
 
 PLATFORMS
-  arm64-darwin-20
+  arm64-darwin
   ruby
-  x86_64-darwin-20
+  x86_64-darwin
 
 DEPENDENCIES
   byebug