Bump nokogiri from 1.11.0 to 1.13.4

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.11.0 to 1.13.4.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.13.4/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.11.0...v1.13.4)

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

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

Gemfile.lock

@@ -177,7 +177,7 @@ GEM
     memoist (0.16.2)
     mini_magick (4.11.0)
     mini_mime (1.0.2)
-    mini_portile2 (2.5.0)
+    mini_portile2 (2.8.0)
     minitest (5.14.2)
     molinillo (0.6.6)
     multi_json (1.15.0)
@@ -186,13 +186,13 @@ GEM
     nap (1.1.0)
     naturally (2.2.0)
     netrc (0.11.0)
-    nokogiri (1.11.0)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.13.4)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     os (1.1.1)
     plist (3.6.0)
     public_suffix (4.0.6)
-    racc (1.5.2)
+    racc (1.6.0)
     rake (13.0.3)
     representable (3.0.4)
       declarative (< 0.1.0)