Merge pull request #21 from apache/dependabot/bundler/nokogiri-1.13.3

Bump nokogiri from 1.8.1 to 1.13.3
diff --git a/Gemfile.lock b/Gemfile.lock
index e61b984..edcb93a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -21,7 +21,7 @@
     execjs (2.7.0)
     faraday (0.13.1)
       multipart-post (>= 1.2, < 3)
-    ffi (1.9.18)
+    ffi (1.11.1)
     forwardable-extended (2.6.0)
     gemoji (3.0.0)
     github-pages (172)
@@ -212,7 +212,7 @@
     rouge (2.2.1)
     ruby-enum (0.7.1)
       i18n
-    rubyzip (1.2.1)
+    rubyzip (2.3.2)
     safe_yaml (1.0.4)
     sass (3.5.5)
       sass-listen (~> 4.0.0)