update Gemfile platform to ruby

Gemfile.lock

@@ -62,15 +62,17 @@ GEM
       rexml
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
-    libv8-node (18.16.0.0-arm64-darwin)
+    libv8-node (18.16.0.0)
     liquid (4.0.4)
     listen (3.8.0)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
     mercenary (0.3.6)
+    mini_portile2 (2.8.5)
     mini_racer (0.8.0)
       libv8-node (~> 18.16.0.0)
-    nokogiri (1.16.0-arm64-darwin)
+    nokogiri (1.16.0)
+      mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     parallel (1.24.0)
     pathutil (0.16.2)
@@ -99,7 +101,7 @@ GEM
     yell (2.2.2)
 
 PLATFORMS
-  arm64-darwin
+  ruby
 
 DEPENDENCIES
   html-proofer (~> 3.18)