Bump nokogiri from 1.11.7 to 1.13.6

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.11.7 to 1.13.6.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.11.7...v1.13.6)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -80,16 +80,16 @@ GEM
     marcel (1.0.1)
     method_source (1.0.0)
     mini_mime (1.1.0)
-    mini_portile2 (2.5.3)
+    mini_portile2 (2.8.0)
     minitest (5.14.4)
     mustermann (1.0.3)
     nio4r (2.5.7)
-    nokogiri (1.11.7)
-      mini_portile2 (~> 2.5.0)
+    nokogiri (1.13.6)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
-    nokogiri (1.11.7-x86_64-darwin)
+    nokogiri (1.13.6-x86_64-darwin)
       racc (~> 1.4)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3)
     rack-protection (2.0.7)
       rack