Bump nokogiri from 1.13.6 to 1.13.9 (#6277)

Author: dependabot[bot]

Diff for: Gemfile.lock

@@ -65,10 +65,10 @@ GEM
     mini_portile2 (2.8.0)
     multipart-post (2.1.1)
     namae (1.1.1)
-    nokogiri (1.13.6)
+    nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogiri (1.13.6-x64-mingw32)
+    nokogiri (1.13.9-x64-mingw32)
       racc (~> 1.4)
     octokit (4.21.0)
       faraday (>= 0.9)