Bump nokogiri from 1.18.8 to 1.18.9

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.18.8 to 1.18.9.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.18.8...v1.18.9)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-version: 1.18.9
  dependency-type: direct:production
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -113,13 +113,13 @@ GEM
       middleman-core (>= 3.2)
       rouge (~> 3.2)
     mini_mime (1.1.2)
-    mini_portile2 (2.8.8)
+    mini_portile2 (2.8.9)
     minitest (5.25.4)
     multi_xml (0.6.0)
     neat (1.7.2)
       bourbon (>= 4.0)
       sass (>= 3.3)
-    nokogiri (1.18.8)
+    nokogiri (1.18.9)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     padrino-helpers (0.15.3)