Bump nokogiri from 1.13.6 to 1.13.9

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.13.6 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@v1.13.6...v1.13.9)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile.lock

@@ -304,7 +304,7 @@ GEM
     mime-types-data (3.2018.0812)
     mini_magick (4.9.5)
     mini_mime (1.1.2)
-    mini_portile2 (2.6.1)
+    mini_portile2 (2.8.0)
     minitest (5.14.4)
     moment-timezone-rails (1.0.0)
       momentjs-rails (>= 2.10.5, <= 3.0.0)
@@ -317,8 +317,8 @@ GEM
     nenv (0.3.0)
     netrc (0.11.0)
     nio4r (2.5.8)
-    nokogiri (1.13.6)
-      mini_portile2 (~> 2.6.1)
+    nokogiri (1.13.9)
+      mini_portile2 (~> 2.8.0)
       racc (~> 1.4)
     nokogumbo (2.0.2)
       nokogiri (~> 1.8, >= 1.8.4)
@@ -348,7 +348,7 @@ GEM
       nio4r (~> 2.0)
     pundit (2.0.1)
       activesupport (>= 3.0.0)
-    racc (1.5.2)
+    racc (1.6.0)
     rack (2.2.3.1)
     rack-test (1.1.0)
       rack (>= 1.0, < 3)