Bump nokogiri from 1.18.8 to 1.18.9 (#181)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-version: 1.18.9
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -271,7 +271,9 @@ GEM
       chef-utils
     net-http (0.4.1)
       uri
-    nokogiri (1.18.8-x86_64-linux-gnu)
+    nokogiri (1.18.9-aarch64-linux-gnu)
+      racc (~> 1.4)
+    nokogiri (1.18.9-x86_64-linux-gnu)
       racc (~> 1.4)
     octokit (4.25.1)
       faraday (>= 1, < 3)
@@ -329,7 +331,6 @@ DEPENDENCIES
   github-pages
   html-proofer
   mdl
-  webrick (~> 1.9)
 
 BUNDLED WITH
    2.3.26