chore(deps): bump nokogiri from 1.18.7 to 1.18.8 in the bundler group

Bumps the bundler group with 1 update: [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: direct:production
  dependency-group: bundler
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -168,9 +168,9 @@ GEM
     net-smtp (0.5.1)
       net-protocol
     nkf (0.2.0)
-    nokogiri (1.18.7-x64-mingw-ucrt)
+    nokogiri (1.18.8-x64-mingw-ucrt)
       racc (~> 1.4)
-    nokogiri (1.18.7-x86_64-linux-gnu)
+    nokogiri (1.18.8-x86_64-linux-gnu)
       racc (~> 1.4)
     observer (0.1.2)
     octokit (9.2.0)