Bump nokogiri from 1.18.4 to 1.18.9

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.18.4 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@v1.18.4...v1.18.9)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -101,21 +101,21 @@ GEM
       mime-types-data (~> 3.2015)
     mime-types-data (3.2025.0318)
     netrc (0.11.0)
-    nokogiri (1.18.4-aarch64-linux-gnu)
+    nokogiri (1.18.9-aarch64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.4-aarch64-linux-musl)
+    nokogiri (1.18.9-aarch64-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.4-arm-linux-gnu)
+    nokogiri (1.18.9-arm-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.4-arm-linux-musl)
+    nokogiri (1.18.9-arm-linux-musl)
       racc (~> 1.4)
-    nokogiri (1.18.4-arm64-darwin)
+    nokogiri (1.18.9-arm64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.4-x86_64-darwin)
+    nokogiri (1.18.9-x86_64-darwin)
       racc (~> 1.4)
-    nokogiri (1.18.4-x86_64-linux-gnu)
+    nokogiri (1.18.9-x86_64-linux-gnu)
       racc (~> 1.4)
-    nokogiri (1.18.4-x86_64-linux-musl)
+    nokogiri (1.18.9-x86_64-linux-musl)
       racc (~> 1.4)
     pathutil (0.16.2)
       forwardable-extended (~> 2.6)