build(deps): Bump nokogiri in the nokogiri group across 1 directory

Bumps the nokogiri group with 1 update in the / directory: [nokogiri](https://github.com/sparklemotion/nokogiri).


Updates `nokogiri` from 1.16.7 to 1.18.1
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.16.7...v1.18.1)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: nokogiri
...

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

Gemfile.lock

@@ -152,7 +152,7 @@ GEM
     net-smtp (0.5.0)
       net-protocol
     nio4r (2.7.4)
-    nokogiri (1.16.8)
+    nokogiri (1.18.1)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     parallel (1.26.3)