Bump nokogiri from 1.11.5 to 1.13.9

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.11.5 to 1.13.9.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.11.5...v1.13.9)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -53,6 +53,7 @@ GEM
     kramdown-parser-gfm (1.1.0)
       kramdown (~> 2.0)
     libv8 (3.16.14.19)
+    libv8 (3.16.14.19-x86_64-linux)
     liquid (4.0.3)
     listen (3.5.1)
       rb-fsevent (~> 0.10, >= 0.10.3)
@@ -62,25 +63,27 @@ GEM
       jekyll (>= 3.5, < 5.0)
       jekyll-feed (~> 0.9)
       jekyll-seo-tag (~> 2.1)
-    nokogiri (1.11.5-x86_64-darwin)
+    nokogiri (1.13.9-x86_64-darwin)
+      racc (~> 1.4)
+    nokogiri (1.13.9-x86_64-linux)
       racc (~> 1.4)
     nokogumbo (2.0.5)
       nokogiri (~> 1.8, >= 1.8.4)
     parallel (1.20.1)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)
     public_suffix (4.0.6)
-    racc (1.5.2)
+    racc (1.6.0)
     rainbow (3.0.0)
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
-      ffi (= 1.15.0)
+      ffi (~> 1.0)
     ref (2.0.0)
     rexml (3.2.5)
     rouge (3.26.0)
     safe_yaml (1.0.5)
     sassc (2.4.0)
-      ffi (= 1.15.0)
+      ffi (~> 1.9)
     terminal-table (2.0.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     therubyracer (0.12.3)
@@ -94,6 +97,7 @@ GEM
 
 PLATFORMS
   x86_64-darwin-20
+  x86_64-linux
 
 DEPENDENCIES
   html-proofer