build(deps-dev): bump nokogiri from 1.16.5 to 1.18.3 in /docs (gruntwork-io#3905)

Bumps [nokogiri](https://github.com/sparklemotion/nokogiri) from 1.16.5 to 1.18.3.
- [Release notes](https://github.com/sparklemotion/nokogiri/releases)
- [Changelog](https://github.com/sparklemotion/nokogiri/blob/v1.18.3/CHANGELOG.md)
- [Commits](sparklemotion/nokogiri@v1.16.5...v1.18.3)

---
updated-dependencies:
- dependency-name: nokogiri
  dependency-type: direct:development
...

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

Author: dependabot[bot]

Diff for: docs/Gemfile

@@ -23,7 +23,7 @@ end
 # Performance-booster for watching directories on Windows
 gem "wdm", "~> 0.1.1", :install_if => Gem.win_platform?
 
-gem "nokogiri", "1.16.5", group: :jekyll_plugins
+gem "nokogiri", "1.18.3", group: :jekyll_plugins
 gem "mini_portile2", "2.8.5", group: :jekyll_plugins
 
 gem "webrick", "~> 1.8"

Diff for: docs/Gemfile.lock

@@ -228,7 +228,7 @@ GEM
     mutex_m (0.2.0)
     net-http (0.4.1)
       uri
-    nokogiri (1.16.5)
+    nokogiri (1.18.3)
       mini_portile2 (~> 2.8.2)
       racc (~> 1.4)
     octokit (4.25.1)
@@ -274,7 +274,7 @@ DEPENDENCIES
   jekyll-sitemap (= 1.4.0)
   jekyll-toc
   mini_portile2 (= 2.8.5)
-  nokogiri (= 1.16.5)
+  nokogiri (= 1.18.3)
   wdm (~> 0.1.1)
   webrick (~> 1.8)