Bump nokogiri in the bundler group across 1 directory

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


Updates `nokogiri` from 1.18.7 to 1.18.8
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/main/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.18.7...v1.18.8)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-version: 1.18.8
  dependency-type: indirect
  dependency-group: bundler
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -251,7 +251,7 @@ GEM
     minitest (5.25.5)
     net-http (0.6.0)
       uri
-    nokogiri (1.18.7)
+    nokogiri (1.18.8)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     octicons (19.8.0)